Finding the Fourth Proportional to 30,933.78, 42,692.10 and 17,505.91

Step by Step Solution

1. Step 1: Write the proportion equation
   30,933.78 : 42,692.10 = 17,505.91 : x
2. Step 2: Convert to fraction form
   30,933.78/42,692.10 = 17,505.91/x
3. Step 3: Cross multiply
   30,933.78x = 42,692.10 × 17,505.91
4. Step 4: Simplify right side
   30,933.78x = 747,363,807.89
5. Step 5: Solve for x
   x = 747,363,807.89/30,933.78
6. Step 6: Final answer
   x = 24,160.12