Finding the Fourth Proportional to 16,152.20, 22,290.56 and 9,779.96

Step by Step Solution

1. Step 1: Write the proportion equation
   16,152.20 : 22,290.56 = 9,779.96 : x
2. Step 2: Convert to fraction form
   16,152.20/22,290.56 = 9,779.96/x
3. Step 3: Cross multiply
   16,152.20x = 22,290.56 × 9,779.96
4. Step 4: Simplify right side
   16,152.20x = 218,000,785.18
5. Step 5: Solve for x
   x = 218,000,785.18/16,152.20
6. Step 6: Final answer
   x = 13,496.66