Finding the Fourth Proportional to 10,619.30, 14,665.25 and 8,749.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,619.30 : 14,665.25 = 8,749.42 : x
2. Step 2: Convert to fraction form
   10,619.30/14,665.25 = 8,749.42/x
3. Step 3: Cross multiply
   10,619.30x = 14,665.25 × 8,749.42
4. Step 4: Simplify right side
   10,619.30x = 128,312,416.87
5. Step 5: Solve for x
   x = 128,312,416.87/10,619.30
6. Step 6: Final answer
   x = 12,082.94