Finding the Fourth Proportional to 8,665.56, 13,014.90 and 5,384.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,665.56 : 13,014.90 = 5,384.76 : x
2. Step 2: Convert to fraction form
   8,665.56/13,014.90 = 5,384.76/x
3. Step 3: Cross multiply
   8,665.56x = 13,014.90 × 5,384.76
4. Step 4: Simplify right side
   8,665.56x = 70,082,112.92
5. Step 5: Solve for x
   x = 70,082,112.92/8,665.56
6. Step 6: Final answer
   x = 8,087.43