Finding the Fourth Proportional to 9,139.37, 12,612.17 and 4,947.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,139.37 : 12,612.17 = 4,947.62 : x
2. Step 2: Convert to fraction form
   9,139.37/12,612.17 = 4,947.62/x
3. Step 3: Cross multiply
   9,139.37x = 12,612.17 × 4,947.62
4. Step 4: Simplify right side
   9,139.37x = 62,400,136.74
5. Step 5: Solve for x
   x = 62,400,136.74/9,139.37
6. Step 6: Final answer
   x = 6,827.62