Finding the Fourth Proportional to 12,858.55, 17,744.88 and 7,484.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,858.55 : 17,744.88 = 7,484.18 : x
2. Step 2: Convert to fraction form
   12,858.55/17,744.88 = 7,484.18/x
3. Step 3: Cross multiply
   12,858.55x = 17,744.88 × 7,484.18
4. Step 4: Simplify right side
   12,858.55x = 132,805,876.00
5. Step 5: Solve for x
   x = 132,805,876.00/12,858.55
6. Step 6: Final answer
   x = 10,328.22