Finding the Fourth Proportional to 8,965.65, 12,372.37 and 5,188.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,965.65 : 12,372.37 = 5,188.29 : x
2. Step 2: Convert to fraction form
   8,965.65/12,372.37 = 5,188.29/x
3. Step 3: Cross multiply
   8,965.65x = 12,372.37 × 5,188.29
4. Step 4: Simplify right side
   8,965.65x = 64,191,443.55
5. Step 5: Solve for x
   x = 64,191,443.55/8,965.65
6. Step 6: Final answer
   x = 7,159.71