Finding the Fourth Proportional to 8,992.89, 12,410.52 and 5,215.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,992.89 : 12,410.52 = 5,215.98 : x
2. Step 2: Convert to fraction form
   8,992.89/12,410.52 = 5,215.98/x
3. Step 3: Cross multiply
   8,992.89x = 12,410.52 × 5,215.98
4. Step 4: Simplify right side
   8,992.89x = 64,733,024.11
5. Step 5: Solve for x
   x = 64,733,024.11/8,992.89
6. Step 6: Final answer
   x = 7,198.24