Finding the Fourth Proportional to 16,499.16, 22,759.65 and 9,778.32

Step by Step Solution

1. Step 1: Write the proportion equation
   16,499.16 : 22,759.65 = 9,778.32 : x
2. Step 2: Convert to fraction form
   16,499.16/22,759.65 = 9,778.32/x
3. Step 3: Cross multiply
   16,499.16x = 22,759.65 × 9,778.32
4. Step 4: Simplify right side
   16,499.16x = 222,551,140.79
5. Step 5: Solve for x
   x = 222,551,140.79/16,499.16
6. Step 6: Final answer
   x = 13,488.63