Finding the Fourth Proportional to 21,162.90, 31,731.48 and 14,581.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,162.90 : 31,731.48 = 14,581.83 : x
2. Step 2: Convert to fraction form
   21,162.90/31,731.48 = 14,581.83/x
3. Step 3: Cross multiply
   21,162.90x = 31,731.48 × 14,581.83
4. Step 4: Simplify right side
   21,162.90x = 462,703,047.01
5. Step 5: Solve for x
   x = 462,703,047.01/21,162.90
6. Step 6: Final answer
   x = 21,863.88