Finding the Fourth Proportional to 10,290.24, 15,406.56 and 5,349.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.24 : 15,406.56 = 5,349.12 : x
2. Step 2: Convert to fraction form
   10,290.24/15,406.56 = 5,349.12/x
3. Step 3: Cross multiply
   10,290.24x = 15,406.56 × 5,349.12
4. Step 4: Simplify right side
   10,290.24x = 82,411,538.23
5. Step 5: Solve for x
   x = 82,411,538.23/10,290.24
6. Step 6: Final answer
   x = 8,008.71