Finding the Fourth Proportional to 12,875.52, 17,771.48 and 7,289.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,875.52 : 17,771.48 = 7,289.76 : x
2. Step 2: Convert to fraction form
   12,875.52/17,771.48 = 7,289.76/x
3. Step 3: Cross multiply
   12,875.52x = 17,771.48 × 7,289.76
4. Step 4: Simplify right side
   12,875.52x = 129,549,824.04
5. Step 5: Solve for x
   x = 129,549,824.04/12,875.52
6. Step 6: Final answer
   x = 10,061.72