Finding the Fourth Proportional to 13,373.82, 18,455.88 and 7,405.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,373.82 : 18,455.88 = 7,405.49 : x
2. Step 2: Convert to fraction form
   13,373.82/18,455.88 = 7,405.49/x
3. Step 3: Cross multiply
   13,373.82x = 18,455.88 × 7,405.49
4. Step 4: Simplify right side
   13,373.82x = 136,674,834.78
5. Step 5: Solve for x
   x = 136,674,834.78/13,373.82
6. Step 6: Final answer
   x = 10,219.58