Finding the Fourth Proportional to 13,116.46, 18,100.63 and 7,148.22

Step by Step Solution

1. Step 1: Write the proportion equation
   13,116.46 : 18,100.63 = 7,148.22 : x
2. Step 2: Convert to fraction form
   13,116.46/18,100.63 = 7,148.22/x
3. Step 3: Cross multiply
   13,116.46x = 18,100.63 × 7,148.22
4. Step 4: Simplify right side
   13,116.46x = 129,387,285.38
5. Step 5: Solve for x
   x = 129,387,285.38/13,116.46
6. Step 6: Final answer
   x = 9,864.50