Finding the Fourth Proportional to 8,992.56, 12,408.28 and 5,013.57

Step by Step Solution

1. Step 1: Write the proportion equation
   8,992.56 : 12,408.28 = 5,013.57 : x
2. Step 2: Convert to fraction form
   8,992.56/12,408.28 = 5,013.57/x
3. Step 3: Cross multiply
   8,992.56x = 12,408.28 × 5,013.57
4. Step 4: Simplify right side
   8,992.56x = 62,209,767.83
5. Step 5: Solve for x
   x = 62,209,767.83/8,992.56
6. Step 6: Final answer
   x = 6,917.92