Finding the Fourth Proportional to 14,290.08, 19,719.78 and 7,916.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,290.08 : 19,719.78 = 7,916.28 : x
2. Step 2: Convert to fraction form
   14,290.08/19,719.78 = 7,916.28/x
3. Step 3: Cross multiply
   14,290.08x = 19,719.78 × 7,916.28
4. Step 4: Simplify right side
   14,290.08x = 156,107,300.02
5. Step 5: Solve for x
   x = 156,107,300.02/14,290.08
6. Step 6: Final answer
   x = 10,924.17