Finding the Fourth Proportional to 15,846.64, 21,868.52 and 8,773.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,846.64 : 21,868.52 = 8,773.72 : x
2. Step 2: Convert to fraction form
   15,846.64/21,868.52 = 8,773.72/x
3. Step 3: Cross multiply
   15,846.64x = 21,868.52 × 8,773.72
4. Step 4: Simplify right side
   15,846.64x = 191,868,271.29
5. Step 5: Solve for x
   x = 191,868,271.29/15,846.64
6. Step 6: Final answer
   x = 12,107.82