Finding the Fourth Proportional to 15,978.79, 22,050.89 and 8,808.94

Step by Step Solution

1. Step 1: Write the proportion equation
   15,978.79 : 22,050.89 = 8,808.94 : x
2. Step 2: Convert to fraction form
   15,978.79/22,050.89 = 8,808.94/x
3. Step 3: Cross multiply
   15,978.79x = 22,050.89 × 8,808.94
4. Step 4: Simplify right side
   15,978.79x = 194,244,966.96
5. Step 5: Solve for x
   x = 194,244,966.96/15,978.79
6. Step 6: Final answer
   x = 12,156.43