Finding the Fourth Proportional to 21,900.43, 32,875.22 and 8,761.96

Step by Step Solution

1. Step 1: Write the proportion equation
   21,900.43 : 32,875.22 = 8,761.96 : x
2. Step 2: Convert to fraction form
   21,900.43/32,875.22 = 8,761.96/x
3. Step 3: Cross multiply
   21,900.43x = 32,875.22 × 8,761.96
4. Step 4: Simplify right side
   21,900.43x = 288,051,362.63
5. Step 5: Solve for x
   x = 288,051,362.63/21,900.43
6. Step 6: Final answer
   x = 13,152.77