Finding the Fourth Proportional to 9,864.72, 13,613.47 and 5,886

Step by Step Solution

1. Step 1: Write the proportion equation
   9,864.72 : 13,613.47 = 5,886 : x
2. Step 2: Convert to fraction form
   9,864.72/13,613.47 = 5,886/x
3. Step 3: Cross multiply
   9,864.72x = 13,613.47 × 5,886
4. Step 4: Simplify right side
   9,864.72x = 80,128,869.71
5. Step 5: Solve for x
   x = 80,128,869.71/9,864.72
6. Step 6: Final answer
   x = 8,122.77