Finding the Fourth Proportional to 11,008.56, 16,515.54 and 5,158.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,008.56 : 16,515.54 = 5,158.34 : x
2. Step 2: Convert to fraction form
   11,008.56/16,515.54 = 5,158.34/x
3. Step 3: Cross multiply
   11,008.56x = 16,515.54 × 5,158.34
4. Step 4: Simplify right side
   11,008.56x = 85,192,688.03
5. Step 5: Solve for x
   x = 85,192,688.03/11,008.56
6. Step 6: Final answer
   x = 7,738.77