Finding the Fourth Proportional to 10,388.00, 15,586.56 and 5,456.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,388.00 : 15,586.56 = 5,456.49 : x
2. Step 2: Convert to fraction form
   10,388.00/15,586.56 = 5,456.49/x
3. Step 3: Cross multiply
   10,388.00x = 15,586.56 × 5,456.49
4. Step 4: Simplify right side
   10,388.00x = 85,047,908.77
5. Step 5: Solve for x
   x = 85,047,908.77/10,388.00
6. Step 6: Final answer
   x = 8,187.13