Finding the Fourth Proportional to 8,628.32, 11,903.56 and 5,440.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,628.32 : 11,903.56 = 5,440.52 : x
2. Step 2: Convert to fraction form
   8,628.32/11,903.56 = 5,440.52/x
3. Step 3: Cross multiply
   8,628.32x = 11,903.56 × 5,440.52
4. Step 4: Simplify right side
   8,628.32x = 64,761,505.45
5. Step 5: Solve for x
   x = 64,761,505.45/8,628.32
6. Step 6: Final answer
   x = 7,505.69