Finding the Fourth Proportional to 15,834.88, 21,851.33 and 8,761.76

Step by Step Solution

1. Step 1: Write the proportion equation
   15,834.88 : 21,851.33 = 8,761.76 : x
2. Step 2: Convert to fraction form
   15,834.88/21,851.33 = 8,761.76/x
3. Step 3: Cross multiply
   15,834.88x = 21,851.33 × 8,761.76
4. Step 4: Simplify right side
   15,834.88x = 191,456,109.14
5. Step 5: Solve for x
   x = 191,456,109.14/15,834.88
6. Step 6: Final answer
   x = 12,090.78