Finding the Fourth Proportional to 12,148.61, 18,214.72 and 5,571.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,148.61 : 18,214.72 = 5,571.23 : x
2. Step 2: Convert to fraction form
   12,148.61/18,214.72 = 5,571.23/x
3. Step 3: Cross multiply
   12,148.61x = 18,214.72 × 5,571.23
4. Step 4: Simplify right side
   12,148.61x = 101,478,394.51
5. Step 5: Solve for x
   x = 101,478,394.51/12,148.61
6. Step 6: Final answer
   x = 8,353.09