Finding the Fourth Proportional to 21,948.96, 32,931.16 and 10,863.30

Step by Step Solution

1. Step 1: Write the proportion equation
   21,948.96 : 32,931.16 = 10,863.30 : x
2. Step 2: Convert to fraction form
   21,948.96/32,931.16 = 10,863.30/x
3. Step 3: Cross multiply
   21,948.96x = 32,931.16 × 10,863.30
4. Step 4: Simplify right side
   21,948.96x = 357,741,070.43
5. Step 5: Solve for x
   x = 357,741,070.43/21,948.96
6. Step 6: Final answer
   x = 16,298.77