Finding the Fourth Proportional to 8,914.72, 12,303.44 and 5,188.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,914.72 : 12,303.44 = 5,188.72 : x
2. Step 2: Convert to fraction form
   8,914.72/12,303.44 = 5,188.72/x
3. Step 3: Cross multiply
   8,914.72x = 12,303.44 × 5,188.72
4. Step 4: Simplify right side
   8,914.72x = 63,839,105.20
5. Step 5: Solve for x
   x = 63,839,105.20/8,914.72
6. Step 6: Final answer
   x = 7,161.09