Finding the Fourth Proportional to 13,100.49, 18,078.86 and 7,132.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.49 : 18,078.86 = 7,132.34 : x
2. Step 2: Convert to fraction form
   13,100.49/18,078.86 = 7,132.34/x
3. Step 3: Cross multiply
   13,100.49x = 18,078.86 × 7,132.34
4. Step 4: Simplify right side
   13,100.49x = 128,944,576.33
5. Step 5: Solve for x
   x = 128,944,576.33/13,100.49
6. Step 6: Final answer
   x = 9,842.73