Finding the Fourth Proportional to 8,758.32, 12,089.16 and 5,402.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,758.32 : 12,089.16 = 5,402.18 : x
2. Step 2: Convert to fraction form
   8,758.32/12,089.16 = 5,402.18/x
3. Step 3: Cross multiply
   8,758.32x = 12,089.16 × 5,402.18
4. Step 4: Simplify right side
   8,758.32x = 65,307,818.37
5. Step 5: Solve for x
   x = 65,307,818.37/8,758.32
6. Step 6: Final answer
   x = 7,456.66