Finding the Fourth Proportional to 8,748.36, 12,070.89 and 5,212.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,748.36 : 12,070.89 = 5,212.71 : x
2. Step 2: Convert to fraction form
   8,748.36/12,070.89 = 5,212.71/x
3. Step 3: Cross multiply
   8,748.36x = 12,070.89 × 5,212.71
4. Step 4: Simplify right side
   8,748.36x = 62,922,049.01
5. Step 5: Solve for x
   x = 62,922,049.01/8,748.36
6. Step 6: Final answer
   x = 7,192.44