Finding the Fourth Proportional to 9,807.56, 13,534.69 and 5,331.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,807.56 : 13,534.69 = 5,331.61 : x
2. Step 2: Convert to fraction form
   9,807.56/13,534.69 = 5,331.61/x
3. Step 3: Cross multiply
   9,807.56x = 13,534.69 × 5,331.61
4. Step 4: Simplify right side
   9,807.56x = 72,161,688.55
5. Step 5: Solve for x
   x = 72,161,688.55/9,807.56
6. Step 6: Final answer
   x = 7,357.77