Finding the Fourth Proportional to 13,312,789,603.52, 18,372,227,152.06 and 7,372,342,105.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,312,789,603.52 : 18,372,227,152.06 = 7,372,342,105.52 : x
2. Step 2: Convert to fraction form
   13,312,789,603.52/18,372,227,152.06 = 7,372,342,105.52/x
3. Step 3: Cross multiply
   13,312,789,603.52x = 18,372,227,152.06 × 7,372,342,105.52
4. Step 4: Simplify right side
   13,312,789,603.52x = 135,446,343,805,309,747,200
5. Step 5: Solve for x
   x = 135,446,343,805,309,747,200/13,312,789,603.52
6. Step 6: Final answer
   x = 10,174,151,912.50