Finding the Fourth Proportional to 30,930, 42,689.76 and 17,502

Step by Step Solution

1. Step 1: Write the proportion equation
   30,930 : 42,689.76 = 17,502 : x
2. Step 2: Convert to fraction form
   30,930/42,689.76 = 17,502/x
3. Step 3: Cross multiply
   30,930x = 42,689.76 × 17,502
4. Step 4: Simplify right side
   30,930x = 747,156,179.52
5. Step 5: Solve for x
   x = 747,156,179.52/30,930
6. Step 6: Final answer
   x = 24,156.36