Finding the Fourth Proportional to 13,377.95, 18,461.34 and 7,409.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,377.95 : 18,461.34 = 7,409.49 : x
2. Step 2: Convert to fraction form
   13,377.95/18,461.34 = 7,409.49/x
3. Step 3: Cross multiply
   13,377.95x = 18,461.34 × 7,409.49
4. Step 4: Simplify right side
   13,377.95x = 136,789,044.89
5. Step 5: Solve for x
   x = 136,789,044.89/13,377.95
6. Step 6: Final answer
   x = 10,224.96