Finding the Fourth Proportional to 13,992.52, 20,997.12 and 5,233.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,992.52 : 20,997.12 = 5,233.72 : x
2. Step 2: Convert to fraction form
   13,992.52/20,997.12 = 5,233.72/x
3. Step 3: Cross multiply
   13,992.52x = 20,997.12 × 5,233.72
4. Step 4: Simplify right side
   13,992.52x = 109,893,046.89
5. Step 5: Solve for x
   x = 109,893,046.89/13,992.52
6. Step 6: Final answer
   x = 7,853.70