Finding the Fourth Proportional to 16,543.82, 22,830.56 and 8,990.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,543.82 : 22,830.56 = 8,990.21 : x
2. Step 2: Convert to fraction form
   16,543.82/22,830.56 = 8,990.21/x
3. Step 3: Cross multiply
   16,543.82x = 22,830.56 × 8,990.21
4. Step 4: Simplify right side
   16,543.82x = 205,251,437.14
5. Step 5: Solve for x
   x = 205,251,437.14/16,543.82
6. Step 6: Final answer
   x = 12,406.54