Finding the Fourth Proportional to 11,731.93, 17,600.20 and 5,158.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,731.93 : 17,600.20 = 5,158.10 : x
2. Step 2: Convert to fraction form
   11,731.93/17,600.20 = 5,158.10/x
3. Step 3: Cross multiply
   11,731.93x = 17,600.20 × 5,158.10
4. Step 4: Simplify right side
   11,731.93x = 90,783,521.83
5. Step 5: Solve for x
   x = 90,783,521.83/11,731.93
6. Step 6: Final answer
   x = 7,738.16