Finding the Fourth Proportional to 10,081.63, 13,911.78 and 5,605.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081.63 : 13,911.78 = 5,605.30 : x
2. Step 2: Convert to fraction form
   10,081.63/13,911.78 = 5,605.30/x
3. Step 3: Cross multiply
   10,081.63x = 13,911.78 × 5,605.30
4. Step 4: Simplify right side
   10,081.63x = 77,979,700.43
5. Step 5: Solve for x
   x = 77,979,700.43/10,081.63
6. Step 6: Final answer
   x = 7,734.83