Finding the Fourth Proportional to 17,697.88, 24,422.88 and 12,390.76

Step by Step Solution

1. Step 1: Write the proportion equation
   17,697.88 : 24,422.88 = 12,390.76 : x
2. Step 2: Convert to fraction form
   17,697.88/24,422.88 = 12,390.76/x
3. Step 3: Cross multiply
   17,697.88x = 24,422.88 × 12,390.76
4. Step 4: Simplify right side
   17,697.88x = 302,618,044.59
5. Step 5: Solve for x
   x = 302,618,044.59/17,697.88
6. Step 6: Final answer
   x = 17,099.11