Finding the Fourth Proportional to 9,976.42, 14,945.48 and 5,580.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,976.42 : 14,945.48 = 5,580.56 : x
2. Step 2: Convert to fraction form
   9,976.42/14,945.48 = 5,580.56/x
3. Step 3: Cross multiply
   9,976.42x = 14,945.48 × 5,580.56
4. Step 4: Simplify right side
   9,976.42x = 83,404,147.87
5. Step 5: Solve for x
   x = 83,404,147.87/9,976.42
6. Step 6: Final answer
   x = 8,360.13