Finding the Fourth Proportional to 10,520.56, 15,786.06 and 5,840.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,520.56 : 15,786.06 = 5,840.56 : x
2. Step 2: Convert to fraction form
   10,520.56/15,786.06 = 5,840.56/x
3. Step 3: Cross multiply
   10,520.56x = 15,786.06 × 5,840.56
4. Step 4: Simplify right side
   10,520.56x = 92,199,430.59
5. Step 5: Solve for x
   x = 92,199,430.59/10,520.56
6. Step 6: Final answer
   x = 8,763.74