Finding the Fourth Proportional to 13,401.16, 18,494.74 and 7,434.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,401.16 : 18,494.74 = 7,434.75 : x
2. Step 2: Convert to fraction form
   13,401.16/18,494.74 = 7,434.75/x
3. Step 3: Cross multiply
   13,401.16x = 18,494.74 × 7,434.75
4. Step 4: Simplify right side
   13,401.16x = 137,503,749.63
5. Step 5: Solve for x
   x = 137,503,749.63/13,401.16
6. Step 6: Final answer
   x = 10,260.59