Finding the Fourth Proportional to 10,749.76, 14,820.72 and 7,386.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,749.76 : 14,820.72 = 7,386.40 : x
2. Step 2: Convert to fraction form
   10,749.76/14,820.72 = 7,386.40/x
3. Step 3: Cross multiply
   10,749.76x = 14,820.72 × 7,386.40
4. Step 4: Simplify right side
   10,749.76x = 109,471,766.21
5. Step 5: Solve for x
   x = 109,471,766.21/10,749.76
6. Step 6: Final answer
   x = 10,183.65