Finding the Fourth Proportional to 8,693.79, 11,996.33 and 5,156.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,693.79 : 11,996.33 = 5,156.31 : x
2. Step 2: Convert to fraction form
   8,693.79/11,996.33 = 5,156.31/x
3. Step 3: Cross multiply
   8,693.79x = 11,996.33 × 5,156.31
4. Step 4: Simplify right side
   8,693.79x = 61,856,796.34
5. Step 5: Solve for x
   x = 61,856,796.34/8,693.79
6. Step 6: Final answer
   x = 7,115.06