Finding the Fourth Proportional to 39,902.88, 59,853.72 and 13,626

Step by Step Solution

1. Step 1: Write the proportion equation
   39,902.88 : 59,853.72 = 13,626 : x
2. Step 2: Convert to fraction form
   39,902.88/59,853.72 = 13,626/x
3. Step 3: Cross multiply
   39,902.88x = 59,853.72 × 13,626
4. Step 4: Simplify right side
   39,902.88x = 815,566,788.72
5. Step 5: Solve for x
   x = 815,566,788.72/39,902.88
6. Step 6: Final answer
   x = 20,438.80