Finding the Fourth Proportional to 13,182.49, 19,772.79 and 5,685.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,182.49 : 19,772.79 = 5,685.72 : x
2. Step 2: Convert to fraction form
   13,182.49/19,772.79 = 5,685.72/x
3. Step 3: Cross multiply
   13,182.49x = 19,772.79 × 5,685.72
4. Step 4: Simplify right side
   13,182.49x = 112,422,547.56
5. Step 5: Solve for x
   x = 112,422,547.56/13,182.49
6. Step 6: Final answer
   x = 8,528.17