Finding the Fourth Proportional to 10,143.83, 13,976.21 and 7,580.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,143.83 : 13,976.21 = 7,580.86 : x
2. Step 2: Convert to fraction form
   10,143.83/13,976.21 = 7,580.86/x
3. Step 3: Cross multiply
   10,143.83x = 13,976.21 × 7,580.86
4. Step 4: Simplify right side
   10,143.83x = 105,951,675.35
5. Step 5: Solve for x
   x = 105,951,675.35/10,143.83
6. Step 6: Final answer
   x = 10,444.94