Finding the Fourth Proportional to 26,141.59, 39,290.15 and 12,300.31

Step by Step Solution

1. Step 1: Write the proportion equation
   26,141.59 : 39,290.15 = 12,300.31 : x
2. Step 2: Convert to fraction form
   26,141.59/39,290.15 = 12,300.31/x
3. Step 3: Cross multiply
   26,141.59x = 39,290.15 × 12,300.31
4. Step 4: Simplify right side
   26,141.59x = 483,281,024.95
5. Step 5: Solve for x
   x = 483,281,024.95/26,141.59
6. Step 6: Final answer
   x = 18,487.06