Finding the Fourth Proportional to 9,280.82, 12,807.42 and 5,031.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,280.82 : 12,807.42 = 5,031.86 : x
2. Step 2: Convert to fraction form
   9,280.82/12,807.42 = 5,031.86/x
3. Step 3: Cross multiply
   9,280.82x = 12,807.42 × 5,031.86
4. Step 4: Simplify right side
   9,280.82x = 64,445,144.40
5. Step 5: Solve for x
   x = 64,445,144.40/9,280.82
6. Step 6: Final answer
   x = 6,943.91