Finding the Fourth Proportional to 16,432.73, 22,681.82 and 9,720.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,432.73 : 22,681.82 = 9,720.69 : x
2. Step 2: Convert to fraction form
   16,432.73/22,681.82 = 9,720.69/x
3. Step 3: Cross multiply
   16,432.73x = 22,681.82 × 9,720.69
4. Step 4: Simplify right side
   16,432.73x = 220,482,955.03
5. Step 5: Solve for x
   x = 220,482,955.03/16,432.73
6. Step 6: Final answer
   x = 13,417.30