Finding the Fourth Proportional to 9,001.53, 12,426.17 and 5,418.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,001.53 : 12,426.17 = 5,418.09 : x
2. Step 2: Convert to fraction form
   9,001.53/12,426.17 = 5,418.09/x
3. Step 3: Cross multiply
   9,001.53x = 12,426.17 × 5,418.09
4. Step 4: Simplify right side
   9,001.53x = 67,326,080.32
5. Step 5: Solve for x
   x = 67,326,080.32/9,001.53
6. Step 6: Final answer
   x = 7,479.40