Finding the Fourth Proportional to 9,042.80, 12,478.47 and 5,063

Step by Step Solution

1. Step 1: Write the proportion equation
   9,042.80 : 12,478.47 = 5,063 : x
2. Step 2: Convert to fraction form
   9,042.80/12,478.47 = 5,063/x
3. Step 3: Cross multiply
   9,042.80x = 12,478.47 × 5,063
4. Step 4: Simplify right side
   9,042.80x = 63,178,493.61
5. Step 5: Solve for x
   x = 63,178,493.61/9,042.80
6. Step 6: Final answer
   x = 6,986.61