Finding the Fourth Proportional to 14,140.72, 19,514.76 and 7,854.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,140.72 : 19,514.76 = 7,854.28 : x
2. Step 2: Convert to fraction form
   14,140.72/19,514.76 = 7,854.28/x
3. Step 3: Cross multiply
   14,140.72x = 19,514.76 × 7,854.28
4. Step 4: Simplify right side
   14,140.72x = 153,274,389.17
5. Step 5: Solve for x
   x = 153,274,389.17/14,140.72
6. Step 6: Final answer
   x = 10,839.22