Finding the Fourth Proportional to 13,322.31, 18,384.42 and 7,353.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,322.31 : 18,384.42 = 7,353.54 : x
2. Step 2: Convert to fraction form
   13,322.31/18,384.42 = 7,353.54/x
3. Step 3: Cross multiply
   13,322.31x = 18,384.42 × 7,353.54
4. Step 4: Simplify right side
   13,322.31x = 135,190,605.77
5. Step 5: Solve for x
   x = 135,190,605.77/13,322.31
6. Step 6: Final answer
   x = 10,147.69