Finding the Fourth Proportional to 14,234.91, 19,643.90 and 7,947.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,234.91 : 19,643.90 = 7,947.15 : x
2. Step 2: Convert to fraction form
   14,234.91/19,643.90 = 7,947.15/x
3. Step 3: Cross multiply
   14,234.91x = 19,643.90 × 7,947.15
4. Step 4: Simplify right side
   14,234.91x = 156,112,980.15
5. Step 5: Solve for x
   x = 156,112,980.15/14,234.91
6. Step 6: Final answer
   x = 10,966.91