Finding the Fourth Proportional to 9,280.50, 12,807.12 and 5,031.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.50 : 12,807.12 = 5,031.63 : x
2. Step 2: Convert to fraction form
   9,280.50/12,807.12 = 5,031.63/x
3. Step 3: Cross multiply
   9,280.50x = 12,807.12 × 5,031.63
4. Step 4: Simplify right side
   9,280.50x = 64,440,689.21
5. Step 5: Solve for x
   x = 64,440,689.21/9,280.50
6. Step 6: Final answer
   x = 6,943.67