Finding the Fourth Proportional to 19,987.88, 29,976.15 and 5,947.34

Step by Step Solution

1. Step 1: Write the proportion equation
   19,987.88 : 29,976.15 = 5,947.34 : x
2. Step 2: Convert to fraction form
   19,987.88/29,976.15 = 5,947.34/x
3. Step 3: Cross multiply
   19,987.88x = 29,976.15 × 5,947.34
4. Step 4: Simplify right side
   19,987.88x = 178,278,355.94
5. Step 5: Solve for x
   x = 178,278,355.94/19,987.88
6. Step 6: Final answer
   x = 8,919.32