Finding the Fourth Proportional to 13,377.56, 18,461.12 and 7,409.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,377.56 : 18,461.12 = 7,409.61 : x
2. Step 2: Convert to fraction form
   13,377.56/18,461.12 = 7,409.61/x
3. Step 3: Cross multiply
   13,377.56x = 18,461.12 × 7,409.61
4. Step 4: Simplify right side
   13,377.56x = 136,789,662.32
5. Step 5: Solve for x
   x = 136,789,662.32/13,377.56
6. Step 6: Final answer
   x = 10,225.31