Finding the Fourth Proportional to 13,353.82, 18,428.18 and 7,385.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,353.82 : 18,428.18 = 7,385.27 : x
2. Step 2: Convert to fraction form
   13,353.82/18,428.18 = 7,385.27/x
3. Step 3: Cross multiply
   13,353.82x = 18,428.18 × 7,385.27
4. Step 4: Simplify right side
   13,353.82x = 136,096,955.84
5. Step 5: Solve for x
   x = 136,096,955.84/13,353.82
6. Step 6: Final answer
   x = 10,191.61