Finding the Fourth Proportional to 8,914.64, 12,302.20 and 5,776.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,914.64 : 12,302.20 = 5,776.28 : x
2. Step 2: Convert to fraction form
   8,914.64/12,302.20 = 5,776.28/x
3. Step 3: Cross multiply
   8,914.64x = 12,302.20 × 5,776.28
4. Step 4: Simplify right side
   8,914.64x = 71,060,951.82
5. Step 5: Solve for x
   x = 71,060,951.82/8,914.64
6. Step 6: Final answer
   x = 7,971.26