Finding the Fourth Proportional to 13,028.26, 17,978.88 and 7,362.90

Step by Step Solution

1. Step 1: Write the proportion equation
   13,028.26 : 17,978.88 = 7,362.90 : x
2. Step 2: Convert to fraction form
   13,028.26/17,978.88 = 7,362.90/x
3. Step 3: Cross multiply
   13,028.26x = 17,978.88 × 7,362.90
4. Step 4: Simplify right side
   13,028.26x = 132,376,681.75
5. Step 5: Solve for x
   x = 132,376,681.75/13,028.26
6. Step 6: Final answer
   x = 10,160.73