Finding the Fourth Proportional to 16,980.88, 23,432.54 and 9,426.76

Step by Step Solution

1. Step 1: Write the proportion equation
   16,980.88 : 23,432.54 = 9,426.76 : x
2. Step 2: Convert to fraction form
   16,980.88/23,432.54 = 9,426.76/x
3. Step 3: Cross multiply
   16,980.88x = 23,432.54 × 9,426.76
4. Step 4: Simplify right side
   16,980.88x = 220,892,930.77
5. Step 5: Solve for x
   x = 220,892,930.77/16,980.88
6. Step 6: Final answer
   x = 13,008.33