Finding the Fourth Proportional to 14,290.93, 19,721.63 and 7,917.71

Step by Step Solution

1. Step 1: Write the proportion equation
   14,290.93 : 19,721.63 = 7,917.71 : x
2. Step 2: Convert to fraction form
   14,290.93/19,721.63 = 7,917.71/x
3. Step 3: Cross multiply
   14,290.93x = 19,721.63 × 7,917.71
4. Step 4: Simplify right side
   14,290.93x = 156,150,107.48
5. Step 5: Solve for x
   x = 156,150,107.48/14,290.93
6. Step 6: Final answer
   x = 10,926.52