Finding the Fourth Proportional to 38,820.83, 58,216.91 and 13,854.20

Step by Step Solution

1. Step 1: Write the proportion equation
   38,820.83 : 58,216.91 = 13,854.20 : x
2. Step 2: Convert to fraction form
   38,820.83/58,216.91 = 13,854.20/x
3. Step 3: Cross multiply
   38,820.83x = 58,216.91 × 13,854.20
4. Step 4: Simplify right side
   38,820.83x = 806,548,354.17
5. Step 5: Solve for x
   x = 806,548,354.17/38,820.83
6. Step 6: Final answer
   x = 20,776.18