Finding the Fourth Proportional to 8,792.72, 12,130.64 and 5,769.51

Step by Step Solution

1. Step 1: Write the proportion equation
   8,792.72 : 12,130.64 = 5,769.51 : x
2. Step 2: Convert to fraction form
   8,792.72/12,130.64 = 5,769.51/x
3. Step 3: Cross multiply
   8,792.72x = 12,130.64 × 5,769.51
4. Step 4: Simplify right side
   8,792.72x = 69,987,848.79
5. Step 5: Solve for x
   x = 69,987,848.79/8,792.72
6. Step 6: Final answer
   x = 7,959.75