Finding the Fourth Proportional to 15,978.89, 22,050.98 and 8,809.06

Step by Step Solution

1. Step 1: Write the proportion equation
   15,978.89 : 22,050.98 = 8,809.06 : x
2. Step 2: Convert to fraction form
   15,978.89/22,050.98 = 8,809.06/x
3. Step 3: Cross multiply
   15,978.89x = 22,050.98 × 8,809.06
4. Step 4: Simplify right side
   15,978.89x = 194,248,405.88
5. Step 5: Solve for x
   x = 194,248,405.88/15,978.89
6. Step 6: Final answer
   x = 12,156.56