Finding the Fourth Proportional to 8,812.16, 12,156.59 and 5,274.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,812.16 : 12,156.59 = 5,274.69 : x
2. Step 2: Convert to fraction form
   8,812.16/12,156.59 = 5,274.69/x
3. Step 3: Cross multiply
   8,812.16x = 12,156.59 × 5,274.69
4. Step 4: Simplify right side
   8,812.16x = 64,122,256.89
5. Step 5: Solve for x
   x = 64,122,256.89/8,812.16
6. Step 6: Final answer
   x = 7,276.56