Finding the Fourth Proportional to 30,787.43, 42,502.28 and 19,468.53

Step by Step Solution

1. Step 1: Write the proportion equation
   30,787.43 : 42,502.28 = 19,468.53 : x
2. Step 2: Convert to fraction form
   30,787.43/42,502.28 = 19,468.53/x
3. Step 3: Cross multiply
   30,787.43x = 42,502.28 × 19,468.53
4. Step 4: Simplify right side
   30,787.43x = 827,456,815.91
5. Step 5: Solve for x
   x = 827,456,815.91/30,787.43
6. Step 6: Final answer
   x = 26,876.45