Finding the Fourth Proportional to 9,886.08, 13,640.76 and 5,693.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,886.08 : 13,640.76 = 5,693.52 : x
2. Step 2: Convert to fraction form
   9,886.08/13,640.76 = 5,693.52/x
3. Step 3: Cross multiply
   9,886.08x = 13,640.76 × 5,693.52
4. Step 4: Simplify right side
   9,886.08x = 77,663,939.88
5. Step 5: Solve for x
   x = 77,663,939.88/9,886.08
6. Step 6: Final answer
   x = 7,855.89