Finding the Fourth Proportional to 12,055.43, 18,070.76 and 5,039.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,055.43 : 18,070.76 = 5,039.55 : x
2. Step 2: Convert to fraction form
   12,055.43/18,070.76 = 5,039.55/x
3. Step 3: Cross multiply
   12,055.43x = 18,070.76 × 5,039.55
4. Step 4: Simplify right side
   12,055.43x = 91,068,511.16
5. Step 5: Solve for x
   x = 91,068,511.16/12,055.43
6. Step 6: Final answer
   x = 7,554.15