Finding the Fourth Proportional to 10,664.80, 15,903.89 and 10,082.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,664.80 : 15,903.89 = 10,082.50 : x
2. Step 2: Convert to fraction form
   10,664.80/15,903.89 = 10,082.50/x
3. Step 3: Cross multiply
   10,664.80x = 15,903.89 × 10,082.50
4. Step 4: Simplify right side
   10,664.80x = 160,350,970.93
5. Step 5: Solve for x
   x = 160,350,970.93/10,664.80
6. Step 6: Final answer
   x = 15,035.53