Finding the Fourth Proportional to 9,859.50, 13,605.57 and 5,610.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,859.50 : 13,605.57 = 5,610.43 : x
2. Step 2: Convert to fraction form
   9,859.50/13,605.57 = 5,610.43/x
3. Step 3: Cross multiply
   9,859.50x = 13,605.57 × 5,610.43
4. Step 4: Simplify right side
   9,859.50x = 76,333,098.10
5. Step 5: Solve for x
   x = 76,333,098.10/9,859.50
6. Step 6: Final answer
   x = 7,742.09