Finding the Fourth Proportional to 10,123,334.72, 13,970,201.60 and 5,539,656.64

Step by Step Solution

1. Step 1: Write the proportion equation
   10,123,334.72 : 13,970,201.60 = 5,539,656.64 : x
2. Step 2: Convert to fraction form
   10,123,334.72/13,970,201.60 = 5,539,656.64/x
3. Step 3: Cross multiply
   10,123,334.72x = 13,970,201.60 × 5,539,656.64
4. Step 4: Simplify right side
   10,123,334.72x = 77,390,120,055,578.62
5. Step 5: Solve for x
   x = 77,390,120,055,578.62/10,123,334.72
6. Step 6: Final answer
   x = 7,644,725.99