Finding the Fourth Proportional to 13,124.04, 18,118.71 and 8,646.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,124.04 : 18,118.71 = 8,646.15 : x
2. Step 2: Convert to fraction form
   13,124.04/18,118.71 = 8,646.15/x
3. Step 3: Cross multiply
   13,124.04x = 18,118.71 × 8,646.15
4. Step 4: Simplify right side
   13,124.04x = 156,657,084.47
5. Step 5: Solve for x
   x = 156,657,084.47/13,124.04
6. Step 6: Final answer
   x = 11,936.65