Finding the Fourth Proportional to 16,507.72, 22,779.30 and 9,055.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,507.72 : 22,779.30 = 9,055.72 : x
2. Step 2: Convert to fraction form
   16,507.72/22,779.30 = 9,055.72/x
3. Step 3: Cross multiply
   16,507.72x = 22,779.30 × 9,055.72
4. Step 4: Simplify right side
   16,507.72x = 206,282,962.60
5. Step 5: Solve for x
   x = 206,282,962.60/16,507.72
6. Step 6: Final answer
   x = 12,496.15