Finding the Fourth Proportional to 10,642.62, 15,965.55 and 3,715.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,642.62 : 15,965.55 = 3,715.50 : x
2. Step 2: Convert to fraction form
   10,642.62/15,965.55 = 3,715.50/x
3. Step 3: Cross multiply
   10,642.62x = 15,965.55 × 3,715.50
4. Step 4: Simplify right side
   10,642.62x = 59,320,001.03
5. Step 5: Solve for x
   x = 59,320,001.03/10,642.62
6. Step 6: Final answer
   x = 5,573.82