Finding the Fourth Proportional to 22,885.13, 34,326.56 and 13,402.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,885.13 : 34,326.56 = 13,402.78 : x
2. Step 2: Convert to fraction form
   22,885.13/34,326.56 = 13,402.78/x
3. Step 3: Cross multiply
   22,885.13x = 34,326.56 × 13,402.78
4. Step 4: Simplify right side
   22,885.13x = 460,071,290.10
5. Step 5: Solve for x
   x = 460,071,290.10/22,885.13
6. Step 6: Final answer
   x = 20,103.50