Finding the Fourth Proportional to 8,817.56, 13,236.06 and 5,123.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,817.56 : 13,236.06 = 5,123.96 : x
2. Step 2: Convert to fraction form
   8,817.56/13,236.06 = 5,123.96/x
3. Step 3: Cross multiply
   8,817.56x = 13,236.06 × 5,123.96
4. Step 4: Simplify right side
   8,817.56x = 67,821,042.00
5. Step 5: Solve for x
   x = 67,821,042.00/8,817.56
6. Step 6: Final answer
   x = 7,691.59