Finding the Fourth Proportional to 10,290.50, 14,200.89 and 5,574.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.50 : 14,200.89 = 5,574.79 : x
2. Step 2: Convert to fraction form
   10,290.50/14,200.89 = 5,574.79/x
3. Step 3: Cross multiply
   10,290.50x = 14,200.89 × 5,574.79
4. Step 4: Simplify right side
   10,290.50x = 79,166,979.56
5. Step 5: Solve for x
   x = 79,166,979.56/10,290.50
6. Step 6: Final answer
   x = 7,693.21