Finding the Fourth Proportional to 13,377.39, 18,461.15 and 7,409.58

Step by Step Solution

1. Step 1: Write the proportion equation
   13,377.39 : 18,461.15 = 7,409.58 : x
2. Step 2: Convert to fraction form
   13,377.39/18,461.15 = 7,409.58/x
3. Step 3: Cross multiply
   13,377.39x = 18,461.15 × 7,409.58
4. Step 4: Simplify right side
   13,377.39x = 136,789,367.82
5. Step 5: Solve for x
   x = 136,789,367.82/13,377.39
6. Step 6: Final answer
   x = 10,225.42