Finding the Fourth Proportional to 13,100.67, 18,078.28 and 7,132.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,100.67 : 18,078.28 = 7,132.32 : x
2. Step 2: Convert to fraction form
   13,100.67/18,078.28 = 7,132.32/x
3. Step 3: Cross multiply
   13,100.67x = 18,078.28 × 7,132.32
4. Step 4: Simplify right side
   13,100.67x = 128,940,060.18
5. Step 5: Solve for x
   x = 128,940,060.18/13,100.67
6. Step 6: Final answer
   x = 9,842.25