Finding the Fourth Proportional to 9,245.34, 12,757.91 and 5,708.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,245.34 : 12,757.91 = 5,708.61 : x
2. Step 2: Convert to fraction form
   9,245.34/12,757.91 = 5,708.61/x
3. Step 3: Cross multiply
   9,245.34x = 12,757.91 × 5,708.61
4. Step 4: Simplify right side
   9,245.34x = 72,829,904.06
5. Step 5: Solve for x
   x = 72,829,904.06/9,245.34
6. Step 6: Final answer
   x = 7,877.47