Finding the Fourth Proportional to 14,378.31, 19,840.55 and 8,089.47

Step by Step Solution

1. Step 1: Write the proportion equation
   14,378.31 : 19,840.55 = 8,089.47 : x
2. Step 2: Convert to fraction form
   14,378.31/19,840.55 = 8,089.47/x
3. Step 3: Cross multiply
   14,378.31x = 19,840.55 × 8,089.47
4. Step 4: Simplify right side
   14,378.31x = 160,499,493.56
5. Step 5: Solve for x
   x = 160,499,493.56/14,378.31
6. Step 6: Final answer
   x = 11,162.61