Finding the Fourth Proportional to 22,216.32, 30,649.77 and 12,779.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,216.32 : 30,649.77 = 12,779.82 : x
2. Step 2: Convert to fraction form
   22,216.32/30,649.77 = 12,779.82/x
3. Step 3: Cross multiply
   22,216.32x = 30,649.77 × 12,779.82
4. Step 4: Simplify right side
   22,216.32x = 391,698,543.64
5. Step 5: Solve for x
   x = 391,698,543.64/22,216.32
6. Step 6: Final answer
   x = 17,631.12