Finding the Fourth Proportional to 9,992.60, 13,789.59 and 5,516.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,992.60 : 13,789.59 = 5,516.54 : x
2. Step 2: Convert to fraction form
   9,992.60/13,789.59 = 5,516.54/x
3. Step 3: Cross multiply
   9,992.60x = 13,789.59 × 5,516.54
4. Step 4: Simplify right side
   9,992.60x = 76,070,755.87
5. Step 5: Solve for x
   x = 76,070,755.87/9,992.60
6. Step 6: Final answer
   x = 7,612.71