Finding the Fourth Proportional to 9,102.89, 12,560.56 and 5,123.24

Step by Step Solution

1. Step 1: Write the proportion equation
   9,102.89 : 12,560.56 = 5,123.24 : x
2. Step 2: Convert to fraction form
   9,102.89/12,560.56 = 5,123.24/x
3. Step 3: Cross multiply
   9,102.89x = 12,560.56 × 5,123.24
4. Step 4: Simplify right side
   9,102.89x = 64,350,763.41
5. Step 5: Solve for x
   x = 64,350,763.41/9,102.89
6. Step 6: Final answer
   x = 7,069.27