Finding the Fourth Proportional to 13,377.77, 18,460.52 and 7,409.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,377.77 : 18,460.52 = 7,409.09 : x
2. Step 2: Convert to fraction form
   13,377.77/18,460.52 = 7,409.09/x
3. Step 3: Cross multiply
   13,377.77x = 18,460.52 × 7,409.09
4. Step 4: Simplify right side
   13,377.77x = 136,775,524.78
5. Step 5: Solve for x
   x = 136,775,524.78/13,377.77
6. Step 6: Final answer
   x = 10,224.09