Finding the Fourth Proportional to 10,290.51, 14,200.95 and 5,574.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.51 : 14,200.95 = 5,574.78 : x
2. Step 2: Convert to fraction form
   10,290.51/14,200.95 = 5,574.78/x
3. Step 3: Cross multiply
   10,290.51x = 14,200.95 × 5,574.78
4. Step 4: Simplify right side
   10,290.51x = 79,167,172.04
5. Step 5: Solve for x
   x = 79,167,172.04/10,290.51
6. Step 6: Final answer
   x = 7,693.22