Finding the Fourth Proportional to 8,756.66, 13,128.18 and 5,976.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,756.66 : 13,128.18 = 5,976.50 : x
2. Step 2: Convert to fraction form
   8,756.66/13,128.18 = 5,976.50/x
3. Step 3: Cross multiply
   8,756.66x = 13,128.18 × 5,976.50
4. Step 4: Simplify right side
   8,756.66x = 78,460,567.77
5. Step 5: Solve for x
   x = 78,460,567.77/8,756.66
6. Step 6: Final answer
   x = 8,960.10