Finding the Fourth Proportional to 32,520.89, 48,780.21 and 13,788.88

Step by Step Solution

1. Step 1: Write the proportion equation
   32,520.89 : 48,780.21 = 13,788.88 : x
2. Step 2: Convert to fraction form
   32,520.89/48,780.21 = 13,788.88/x
3. Step 3: Cross multiply
   32,520.89x = 48,780.21 × 13,788.88
4. Step 4: Simplify right side
   32,520.89x = 672,624,462.06
5. Step 5: Solve for x
   x = 672,624,462.06/32,520.89
6. Step 6: Final answer
   x = 20,682.84