Finding the Fourth Proportional to 12,331.04, 18,498.72 and 5,410.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,331.04 : 18,498.72 = 5,410.40 : x
2. Step 2: Convert to fraction form
   12,331.04/18,498.72 = 5,410.40/x
3. Step 3: Cross multiply
   12,331.04x = 18,498.72 × 5,410.40
4. Step 4: Simplify right side
   12,331.04x = 100,085,474.69
5. Step 5: Solve for x
   x = 100,085,474.69/12,331.04
6. Step 6: Final answer
   x = 8,116.55