Finding the Fourth Proportional to 22,470.48, 31,007.43 and 12,907.35

Step by Step Solution

1. Step 1: Write the proportion equation
   22,470.48 : 31,007.43 = 12,907.35 : x
2. Step 2: Convert to fraction form
   22,470.48/31,007.43 = 12,907.35/x
3. Step 3: Cross multiply
   22,470.48x = 31,007.43 × 12,907.35
4. Step 4: Simplify right side
   22,470.48x = 400,223,751.61
5. Step 5: Solve for x
   x = 400,223,751.61/22,470.48
6. Step 6: Final answer
   x = 17,811.09