Finding the Fourth Proportional to 9,621.34, 13,276.78 and 5,586.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,621.34 : 13,276.78 = 5,586.32 : x
2. Step 2: Convert to fraction form
   9,621.34/13,276.78 = 5,586.32/x
3. Step 3: Cross multiply
   9,621.34x = 13,276.78 × 5,586.32
4. Step 4: Simplify right side
   9,621.34x = 74,168,360.88
5. Step 5: Solve for x
   x = 74,168,360.88/9,621.34
6. Step 6: Final answer
   x = 7,708.74