Finding the Fourth Proportional to 9,858.71, 13,605.17 and 5,610.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,858.71 : 13,605.17 = 5,610.47 : x
2. Step 2: Convert to fraction form
   9,858.71/13,605.17 = 5,610.47/x
3. Step 3: Cross multiply
   9,858.71x = 13,605.17 × 5,610.47
4. Step 4: Simplify right side
   9,858.71x = 76,331,302.05
5. Step 5: Solve for x
   x = 76,331,302.05/9,858.71
6. Step 6: Final answer
   x = 7,742.52