Finding the Fourth Proportional to 22,123.51, 33,108.91 and 13,686.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,123.51 : 33,108.91 = 13,686.55 : x
2. Step 2: Convert to fraction form
   22,123.51/33,108.91 = 13,686.55/x
3. Step 3: Cross multiply
   22,123.51x = 33,108.91 × 13,686.55
4. Step 4: Simplify right side
   22,123.51x = 453,146,752.16
5. Step 5: Solve for x
   x = 453,146,752.16/22,123.51
6. Step 6: Final answer
   x = 20,482.59