Finding the Fourth Proportional to 10,335.78, 14,263.52 and 5,620.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,335.78 : 14,263.52 = 5,620.05 : x
2. Step 2: Convert to fraction form
   10,335.78/14,263.52 = 5,620.05/x
3. Step 3: Cross multiply
   10,335.78x = 14,263.52 × 5,620.05
4. Step 4: Simplify right side
   10,335.78x = 80,161,667.48
5. Step 5: Solve for x
   x = 80,161,667.48/10,335.78
6. Step 6: Final answer
   x = 7,755.74