Finding the Fourth Proportional to 12,831.68, 17,703.96 and 7,526.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,831.68 : 17,703.96 = 7,526.72 : x
2. Step 2: Convert to fraction form
   12,831.68/17,703.96 = 7,526.72/x
3. Step 3: Cross multiply
   12,831.68x = 17,703.96 × 7,526.72
4. Step 4: Simplify right side
   12,831.68x = 133,252,749.81
5. Step 5: Solve for x
   x = 133,252,749.81/12,831.68
6. Step 6: Final answer
   x = 10,384.67