Finding the Fourth Proportional to 9,856.21, 13,601.04 and 5,606.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,856.21 : 13,601.04 = 5,606.71 : x
2. Step 2: Convert to fraction form
   9,856.21/13,601.04 = 5,606.71/x
3. Step 3: Cross multiply
   9,856.21x = 13,601.04 × 5,606.71
4. Step 4: Simplify right side
   9,856.21x = 76,257,086.98
5. Step 5: Solve for x
   x = 76,257,086.98/9,856.21
6. Step 6: Final answer
   x = 7,736.96