Finding the Fourth Proportional to 13,325,421.56, 18,389,123.16 and 7,213,835.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,325,421.56 : 18,389,123.16 = 7,213,835.48 : x
2. Step 2: Convert to fraction form
   13,325,421.56/18,389,123.16 = 7,213,835.48/x
3. Step 3: Cross multiply
   13,325,421.56x = 18,389,123.16 × 7,213,835.48
4. Step 4: Simplify right side
   13,325,421.56x = 132,656,109,097,697.72
5. Step 5: Solve for x
   x = 132,656,109,097,697.72/13,325,421.56
6. Step 6: Final answer
   x = 9,955,115.38