Finding the Fourth Proportional to 30,488.52, 42,151.14 and 22,518.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,488.52 : 42,151.14 = 22,518.12 : x
2. Step 2: Convert to fraction form
   30,488.52/42,151.14 = 22,518.12/x
3. Step 3: Cross multiply
   30,488.52x = 42,151.14 × 22,518.12
4. Step 4: Simplify right side
   30,488.52x = 949,164,428.66
5. Step 5: Solve for x
   x = 949,164,428.66/30,488.52
6. Step 6: Final answer
   x = 31,131.86