Finding the Fourth Proportional to 12,615.92, 18,936.52 and 5,224.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,615.92 : 18,936.52 = 5,224.72 : x
2. Step 2: Convert to fraction form
   12,615.92/18,936.52 = 5,224.72/x
3. Step 3: Cross multiply
   12,615.92x = 18,936.52 × 5,224.72
4. Step 4: Simplify right side
   12,615.92x = 98,938,014.77
5. Step 5: Solve for x
   x = 98,938,014.77/12,615.92
6. Step 6: Final answer
   x = 7,842.31