Finding the Fourth Proportional to 10,499.85, 14,489.45 and 5,784.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,499.85 : 14,489.45 = 5,784.12 : x
2. Step 2: Convert to fraction form
   10,499.85/14,489.45 = 5,784.12/x
3. Step 3: Cross multiply
   10,499.85x = 14,489.45 × 5,784.12
4. Step 4: Simplify right side
   10,499.85x = 83,808,688.61
5. Step 5: Solve for x
   x = 83,808,688.61/10,499.85
6. Step 6: Final answer
   x = 7,981.89