Finding the Fourth Proportional to 8,735.97, 12,055.59 and 5,199.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,735.97 : 12,055.59 = 5,199.15 : x
2. Step 2: Convert to fraction form
   8,735.97/12,055.59 = 5,199.15/x
3. Step 3: Cross multiply
   8,735.97x = 12,055.59 × 5,199.15
4. Step 4: Simplify right side
   8,735.97x = 62,678,820.75
5. Step 5: Solve for x
   x = 62,678,820.75/8,735.97
6. Step 6: Final answer
   x = 7,174.80