Finding the Fourth Proportional to 28,057.32, 38,701.86 and 16,719

Step by Step Solution

1. Step 1: Write the proportion equation
   28,057.32 : 38,701.86 = 16,719 : x
2. Step 2: Convert to fraction form
   28,057.32/38,701.86 = 16,719/x
3. Step 3: Cross multiply
   28,057.32x = 38,701.86 × 16,719
4. Step 4: Simplify right side
   28,057.32x = 647,056,397.34
5. Step 5: Solve for x
   x = 647,056,397.34/28,057.32
6. Step 6: Final answer
   x = 23,061.95