Finding the Fourth Proportional to 10,499.28, 14,489.08 and 5,783.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,499.28 : 14,489.08 = 5,783.72 : x
2. Step 2: Convert to fraction form
   10,499.28/14,489.08 = 5,783.72/x
3. Step 3: Cross multiply
   10,499.28x = 14,489.08 × 5,783.72
4. Step 4: Simplify right side
   10,499.28x = 83,800,781.78
5. Step 5: Solve for x
   x = 83,800,781.78/10,499.28
6. Step 6: Final answer
   x = 7,981.57