Finding the Fourth Proportional to 8,808.12, 12,156.57 and 5,272.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,808.12 : 12,156.57 = 5,272.47 : x
2. Step 2: Convert to fraction form
   8,808.12/12,156.57 = 5,272.47/x
3. Step 3: Cross multiply
   8,808.12x = 12,156.57 × 5,272.47
4. Step 4: Simplify right side
   8,808.12x = 64,095,150.63
5. Step 5: Solve for x
   x = 64,095,150.63/8,808.12
6. Step 6: Final answer
   x = 7,276.83