Finding the Fourth Proportional to 9,806.96, 13,530.29 and 5,557.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,806.96 : 13,530.29 = 5,557.56 : x
2. Step 2: Convert to fraction form
   9,806.96/13,530.29 = 5,557.56/x
3. Step 3: Cross multiply
   9,806.96x = 13,530.29 × 5,557.56
4. Step 4: Simplify right side
   9,806.96x = 75,195,370.70
5. Step 5: Solve for x
   x = 75,195,370.70/9,806.96
6. Step 6: Final answer
   x = 7,667.56