Finding the Fourth Proportional to 21,386.56, 32,081.63 and 5,591.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,386.56 : 32,081.63 = 5,591.56 : x
2. Step 2: Convert to fraction form
   21,386.56/32,081.63 = 5,591.56/x
3. Step 3: Cross multiply
   21,386.56x = 32,081.63 × 5,591.56
4. Step 4: Simplify right side
   21,386.56x = 179,386,359.04
5. Step 5: Solve for x
   x = 179,386,359.04/21,386.56
6. Step 6: Final answer
   x = 8,387.81