Finding the Fourth Proportional to 15,826.42, 21,839.59 and 8,752.38

Step by Step Solution

1. Step 1: Write the proportion equation
   15,826.42 : 21,839.59 = 8,752.38 : x
2. Step 2: Convert to fraction form
   15,826.42/21,839.59 = 8,752.38/x
3. Step 3: Cross multiply
   15,826.42x = 21,839.59 × 8,752.38
4. Step 4: Simplify right side
   15,826.42x = 191,148,390.72
5. Step 5: Solve for x
   x = 191,148,390.72/15,826.42
6. Step 6: Final answer
   x = 12,077.80