Finding the Fourth Proportional to 10,188.46, 15,279.72 and 3,947.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,188.46 : 15,279.72 = 3,947.08 : x
2. Step 2: Convert to fraction form
   10,188.46/15,279.72 = 3,947.08/x
3. Step 3: Cross multiply
   10,188.46x = 15,279.72 × 3,947.08
4. Step 4: Simplify right side
   10,188.46x = 60,310,200.82
5. Step 5: Solve for x
   x = 60,310,200.82/10,188.46
6. Step 6: Final answer
   x = 5,919.46