Finding the Fourth Proportional to 30,521.87, 42,105.33 and 19,763.66

Step by Step Solution

1. Step 1: Write the proportion equation
   30,521.87 : 42,105.33 = 19,763.66 : x
2. Step 2: Convert to fraction form
   30,521.87/42,105.33 = 19,763.66/x
3. Step 3: Cross multiply
   30,521.87x = 42,105.33 × 19,763.66
4. Step 4: Simplify right side
   30,521.87x = 832,155,426.31
5. Step 5: Solve for x
   x = 832,155,426.31/30,521.87
6. Step 6: Final answer
   x = 27,264.23