Finding the Fourth Proportional to 12,849.60, 17,728.29 and 7,545.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,849.60 : 17,728.29 = 7,545.72 : x
2. Step 2: Convert to fraction form
   12,849.60/17,728.29 = 7,545.72/x
3. Step 3: Cross multiply
   12,849.60x = 17,728.29 × 7,545.72
4. Step 4: Simplify right side
   12,849.60x = 133,772,712.42
5. Step 5: Solve for x
   x = 133,772,712.42/12,849.60
6. Step 6: Final answer
   x = 10,410.65