Finding the Fourth Proportional to 13,373.96, 18,455.82 and 7,405.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,373.96 : 18,455.82 = 7,405.61 : x
2. Step 2: Convert to fraction form
   13,373.96/18,455.82 = 7,405.61/x
3. Step 3: Cross multiply
   13,373.96x = 18,455.82 × 7,405.61
4. Step 4: Simplify right side
   13,373.96x = 136,676,485.10
5. Step 5: Solve for x
   x = 136,676,485.10/13,373.96
6. Step 6: Final answer
   x = 10,219.60