Finding the Fourth Proportional to 14,291.10, 19,721.46 and 7,917.56

Step by Step Solution

1. Step 1: Write the proportion equation
   14,291.10 : 19,721.46 = 7,917.56 : x
2. Step 2: Convert to fraction form
   14,291.10/19,721.46 = 7,917.56/x
3. Step 3: Cross multiply
   14,291.10x = 19,721.46 × 7,917.56
4. Step 4: Simplify right side
   14,291.10x = 156,145,793.53
5. Step 5: Solve for x
   x = 156,145,793.53/14,291.10
6. Step 6: Final answer
   x = 10,926.08