Finding the Fourth Proportional to 15,978.54, 22,050.54 and 8,808.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,978.54 : 22,050.54 = 8,808.72 : x
2. Step 2: Convert to fraction form
   15,978.54/22,050.54 = 8,808.72/x
3. Step 3: Cross multiply
   15,978.54x = 22,050.54 × 8,808.72
4. Step 4: Simplify right side
   15,978.54x = 194,237,032.71
5. Step 5: Solve for x
   x = 194,237,032.71/15,978.54
6. Step 6: Final answer
   x = 12,156.12