Finding the Fourth Proportional to 17,942.42, 24,734.88 and 12,620.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,942.42 : 24,734.88 = 12,620.72 : x
2. Step 2: Convert to fraction form
   17,942.42/24,734.88 = 12,620.72/x
3. Step 3: Cross multiply
   17,942.42x = 24,734.88 × 12,620.72
4. Step 4: Simplify right side
   17,942.42x = 312,171,931.61
5. Step 5: Solve for x
   x = 312,171,931.61/17,942.42
6. Step 6: Final answer
   x = 17,398.54