Finding the Fourth Proportional to 30,978.17, 42,751.99 and 17,549.53

Step by Step Solution

1. Step 1: Write the proportion equation
   30,978.17 : 42,751.99 = 17,549.53 : x
2. Step 2: Convert to fraction form
   30,978.17/42,751.99 = 17,549.53/x
3. Step 3: Cross multiply
   30,978.17x = 42,751.99 × 17,549.53
4. Step 4: Simplify right side
   30,978.17x = 750,277,331.06
5. Step 5: Solve for x
   x = 750,277,331.06/30,978.17
6. Step 6: Final answer
   x = 24,219.55