Finding the Fourth Proportional to 9,992.40, 13,789.24 and 5,516.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,992.40 : 13,789.24 = 5,516.07 : x
2. Step 2: Convert to fraction form
   9,992.40/13,789.24 = 5,516.07/x
3. Step 3: Cross multiply
   9,992.40x = 13,789.24 × 5,516.07
4. Step 4: Simplify right side
   9,992.40x = 76,062,347.59
5. Step 5: Solve for x
   x = 76,062,347.59/9,992.40
6. Step 6: Final answer
   x = 7,612.02