Finding the Fourth Proportional to 32,602.32, 45,018.78 and 20,686.80

Step by Step Solution

1. Step 1: Write the proportion equation
   32,602.32 : 45,018.78 = 20,686.80 : x
2. Step 2: Convert to fraction form
   32,602.32/45,018.78 = 20,686.80/x
3. Step 3: Cross multiply
   32,602.32x = 45,018.78 × 20,686.80
4. Step 4: Simplify right side
   32,602.32x = 931,294,498.10
5. Step 5: Solve for x
   x = 931,294,498.10/32,602.32
6. Step 6: Final answer
   x = 28,565.28