Finding the Fourth Proportional to 15,796.72, 23,689.61 and 8,787.39

Step by Step Solution

1. Step 1: Write the proportion equation
   15,796.72 : 23,689.61 = 8,787.39 : x
2. Step 2: Convert to fraction form
   15,796.72/23,689.61 = 8,787.39/x
3. Step 3: Cross multiply
   15,796.72x = 23,689.61 × 8,787.39
4. Step 4: Simplify right side
   15,796.72x = 208,169,842.02
5. Step 5: Solve for x
   x = 208,169,842.02/15,796.72
6. Step 6: Final answer
   x = 13,178.04