Finding the Fourth Proportional to 14,290.69, 19,719.63 and 7,917.10

Step by Step Solution

1. Step 1: Write the proportion equation
   14,290.69 : 19,719.63 = 7,917.10 : x
2. Step 2: Convert to fraction form
   14,290.69/19,719.63 = 7,917.10/x
3. Step 3: Cross multiply
   14,290.69x = 19,719.63 × 7,917.10
4. Step 4: Simplify right side
   14,290.69x = 156,122,184.07
5. Step 5: Solve for x
   x = 156,122,184.07/14,290.69
6. Step 6: Final answer
   x = 10,924.75