Finding the Fourth Proportional to 10,855.12, 16,274.04 and 5,008.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,855.12 : 16,274.04 = 5,008.72 : x
2. Step 2: Convert to fraction form
   10,855.12/16,274.04 = 5,008.72/x
3. Step 3: Cross multiply
   10,855.12x = 16,274.04 × 5,008.72
4. Step 4: Simplify right side
   10,855.12x = 81,512,109.63
5. Step 5: Solve for x
   x = 81,512,109.63/10,855.12
6. Step 6: Final answer
   x = 7,509.09