Finding the Fourth Proportional to 13,431.39, 18,535.18 and 7,462.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,431.39 : 18,535.18 = 7,462.94 : x
2. Step 2: Convert to fraction form
   13,431.39/18,535.18 = 7,462.94/x
3. Step 3: Cross multiply
   13,431.39x = 18,535.18 × 7,462.94
4. Step 4: Simplify right side
   13,431.39x = 138,326,838.89
5. Step 5: Solve for x
   x = 138,326,838.89/13,431.39
6. Step 6: Final answer
   x = 10,298.78