Finding the Fourth Proportional to 11,590.72, 15,992.52 and 7,820.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,590.72 : 15,992.52 = 7,820.88 : x
2. Step 2: Convert to fraction form
   11,590.72/15,992.52 = 7,820.88/x
3. Step 3: Cross multiply
   11,590.72x = 15,992.52 × 7,820.88
4. Step 4: Simplify right side
   11,590.72x = 125,075,579.82
5. Step 5: Solve for x
   x = 125,075,579.82/11,590.72
6. Step 6: Final answer
   x = 10,791.01