Finding the Fourth Proportional to 13,387.33, 18,475.59 and 7,419.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,387.33 : 18,475.59 = 7,419.52 : x
2. Step 2: Convert to fraction form
   13,387.33/18,475.59 = 7,419.52/x
3. Step 3: Cross multiply
   13,387.33x = 18,475.59 × 7,419.52
4. Step 4: Simplify right side
   13,387.33x = 137,080,009.52
5. Step 5: Solve for x
   x = 137,080,009.52/13,387.33
6. Step 6: Final answer
   x = 10,239.53