Finding the Fourth Proportional to 22,818.09, 31,479.60 and 13,864.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,818.09 : 31,479.60 = 13,864.15 : x
2. Step 2: Convert to fraction form
   22,818.09/31,479.60 = 13,864.15/x
3. Step 3: Cross multiply
   22,818.09x = 31,479.60 × 13,864.15
4. Step 4: Simplify right side
   22,818.09x = 436,437,896.34
5. Step 5: Solve for x
   x = 436,437,896.34/22,818.09
6. Step 6: Final answer
   x = 19,126.84