Finding the Fourth Proportional to 22,470.01, 31,008.35 and 12,398.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,470.01 : 31,008.35 = 12,398.50 : x
2. Step 2: Convert to fraction form
   22,470.01/31,008.35 = 12,398.50/x
3. Step 3: Cross multiply
   22,470.01x = 31,008.35 × 12,398.50
4. Step 4: Simplify right side
   22,470.01x = 384,457,097.23
5. Step 5: Solve for x
   x = 384,457,097.23/22,470.01
6. Step 6: Final answer
   x = 17,109.79