Finding the Fourth Proportional to 11,590.94, 15,992.82 and 7,821.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,590.94 : 15,992.82 = 7,821.10 : x
2. Step 2: Convert to fraction form
   11,590.94/15,992.82 = 7,821.10/x
3. Step 3: Cross multiply
   11,590.94x = 15,992.82 × 7,821.10
4. Step 4: Simplify right side
   11,590.94x = 125,081,444.50
5. Step 5: Solve for x
   x = 125,081,444.50/11,590.94
6. Step 6: Final answer
   x = 10,791.31