Finding the Fourth Proportional to 10,665.86, 14,719.56 and 7,074.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,665.86 : 14,719.56 = 7,074.50 : x
2. Step 2: Convert to fraction form
   10,665.86/14,719.56 = 7,074.50/x
3. Step 3: Cross multiply
   10,665.86x = 14,719.56 × 7,074.50
4. Step 4: Simplify right side
   10,665.86x = 104,133,527.22
5. Step 5: Solve for x
   x = 104,133,527.22/10,665.86
6. Step 6: Final answer
   x = 9,763.26