Finding the Fourth Proportional to 11,731.06, 17,598.89 and 5,157.23

Step by Step Solution

1. Step 1: Write the proportion equation
   11,731.06 : 17,598.89 = 5,157.23 : x
2. Step 2: Convert to fraction form
   11,731.06/17,598.89 = 5,157.23/x
3. Step 3: Cross multiply
   11,731.06x = 17,598.89 × 5,157.23
4. Step 4: Simplify right side
   11,731.06x = 90,761,409.69
5. Step 5: Solve for x
   x = 90,761,409.69/11,731.06
6. Step 6: Final answer
   x = 7,736.85