Finding the Fourth Proportional to 8,513.38, 11,748.69 and 5,156.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,513.38 : 11,748.69 = 5,156.80 : x
2. Step 2: Convert to fraction form
   8,513.38/11,748.69 = 5,156.80/x
3. Step 3: Cross multiply
   8,513.38x = 11,748.69 × 5,156.80
4. Step 4: Simplify right side
   8,513.38x = 60,585,644.59
5. Step 5: Solve for x
   x = 60,585,644.59/8,513.38
6. Step 6: Final answer
   x = 7,116.52