Finding the Fourth Proportional to 12,039.30, 18,053.55 and 4,641.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,039.30 : 18,053.55 = 4,641.30 : x
2. Step 2: Convert to fraction form
   12,039.30/18,053.55 = 4,641.30/x
3. Step 3: Cross multiply
   12,039.30x = 18,053.55 × 4,641.30
4. Step 4: Simplify right side
   12,039.30x = 83,791,941.62
5. Step 5: Solve for x
   x = 83,791,941.62/12,039.30
6. Step 6: Final answer
   x = 6,959.87