Finding the Fourth Proportional to 9,412.04, 12,990.96 and 5,435.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,412.04 : 12,990.96 = 5,435.56 : x
2. Step 2: Convert to fraction form
   9,412.04/12,990.96 = 5,435.56/x
3. Step 3: Cross multiply
   9,412.04x = 12,990.96 × 5,435.56
4. Step 4: Simplify right side
   9,412.04x = 70,613,142.54
5. Step 5: Solve for x
   x = 70,613,142.54/9,412.04
6. Step 6: Final answer
   x = 7,502.43