Finding the Fourth Proportional to 9,472.56, 14,188.47 and 7,685.59

Step by Step Solution

1. Step 1: Write the proportion equation
   9,472.56 : 14,188.47 = 7,685.59 : x
2. Step 2: Convert to fraction form
   9,472.56/14,188.47 = 7,685.59/x
3. Step 3: Cross multiply
   9,472.56x = 14,188.47 × 7,685.59
4. Step 4: Simplify right side
   9,472.56x = 109,046,763.15
5. Step 5: Solve for x
   x = 109,046,763.15/9,472.56
6. Step 6: Final answer
   x = 11,511.86