Finding the Fourth Proportional to 10,439.58, 15,648.03 and 4,889.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,439.58 : 15,648.03 = 4,889.46 : x
2. Step 2: Convert to fraction form
   10,439.58/15,648.03 = 4,889.46/x
3. Step 3: Cross multiply
   10,439.58x = 15,648.03 × 4,889.46
4. Step 4: Simplify right side
   10,439.58x = 76,510,416.76
5. Step 5: Solve for x
   x = 76,510,416.76/10,439.58
6. Step 6: Final answer
   x = 7,328.88