Finding the Fourth Proportional to 9,992.21, 13,789.29 and 5,516

Step by Step Solution

1. Step 1: Write the proportion equation
   9,992.21 : 13,789.29 = 5,516 : x
2. Step 2: Convert to fraction form
   9,992.21/13,789.29 = 5,516/x
3. Step 3: Cross multiply
   9,992.21x = 13,789.29 × 5,516
4. Step 4: Simplify right side
   9,992.21x = 76,061,723.64
5. Step 5: Solve for x
   x = 76,061,723.64/9,992.21
6. Step 6: Final answer
   x = 7,612.10