Finding the Fourth Proportional to 8,769.81, 12,100.74 and 5,185.35

Step by Step Solution

1. Step 1: Write the proportion equation
   8,769.81 : 12,100.74 = 5,185.35 : x
2. Step 2: Convert to fraction form
   8,769.81/12,100.74 = 5,185.35/x
3. Step 3: Cross multiply
   8,769.81x = 12,100.74 × 5,185.35
4. Step 4: Simplify right side
   8,769.81x = 62,746,572.16
5. Step 5: Solve for x
   x = 62,746,572.16/8,769.81
6. Step 6: Final answer
   x = 7,154.84