Finding the Fourth Proportional to 13,064.32, 18,028.56 and 7,321.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,064.32 : 18,028.56 = 7,321.69 : x
2. Step 2: Convert to fraction form
   13,064.32/18,028.56 = 7,321.69/x
3. Step 3: Cross multiply
   13,064.32x = 18,028.56 × 7,321.69
4. Step 4: Simplify right side
   13,064.32x = 131,999,482.40
5. Step 5: Solve for x
   x = 131,999,482.40/13,064.32
6. Step 6: Final answer
   x = 10,103.82