Finding the Fourth Proportional to 12,853.55, 17,737.98 and 7,479.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,853.55 : 17,737.98 = 7,479.18 : x
2. Step 2: Convert to fraction form
   12,853.55/17,737.98 = 7,479.18/x
3. Step 3: Cross multiply
   12,853.55x = 17,737.98 × 7,479.18
4. Step 4: Simplify right side
   12,853.55x = 132,665,488.36
5. Step 5: Solve for x
   x = 132,665,488.36/12,853.55
6. Step 6: Final answer
   x = 10,321.31