Finding the Fourth Proportional to 10,580.82, 14,590.15 and 8,920.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,580.82 : 14,590.15 = 8,920.52 : x
2. Step 2: Convert to fraction form
   10,580.82/14,590.15 = 8,920.52/x
3. Step 3: Cross multiply
   10,580.82x = 14,590.15 × 8,920.52
4. Step 4: Simplify right side
   10,580.82x = 130,151,724.88
5. Step 5: Solve for x
   x = 130,151,724.88/10,580.82
6. Step 6: Final answer
   x = 12,300.72