Finding the Fourth Proportional to 21,660,768.63, 32,490,902.69 and 5,266,145.91

Step by Step Solution

1. Step 1: Write the proportion equation
   21,660,768.63 : 32,490,902.69 = 5,266,145.91 : x
2. Step 2: Convert to fraction form
   21,660,768.63/32,490,902.69 = 5,266,145.91/x
3. Step 3: Cross multiply
   21,660,768.63x = 32,490,902.69 × 5,266,145.91
4. Step 4: Simplify right side
   21,660,768.63x = 171,101,834,428,409.72
5. Step 5: Solve for x
   x = 171,101,834,428,409.72/21,660,768.63
6. Step 6: Final answer
   x = 7,899,158.03