Finding the Fourth Proportional to 14,007.50, 19,330.25 and 7,719.87

Step by Step Solution

1. Step 1: Write the proportion equation
   14,007.50 : 19,330.25 = 7,719.87 : x
2. Step 2: Convert to fraction form
   14,007.50/19,330.25 = 7,719.87/x
3. Step 3: Cross multiply
   14,007.50x = 19,330.25 × 7,719.87
4. Step 4: Simplify right side
   14,007.50x = 149,226,978.47
5. Step 5: Solve for x
   x = 149,226,978.47/14,007.50
6. Step 6: Final answer
   x = 10,653.37