Finding the Fourth Proportional to 13,426.78, 20,141.80 and 3,566.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,426.78 : 20,141.80 = 3,566.24 : x
2. Step 2: Convert to fraction form
   13,426.78/20,141.80 = 3,566.24/x
3. Step 3: Cross multiply
   13,426.78x = 20,141.80 × 3,566.24
4. Step 4: Simplify right side
   13,426.78x = 71,830,492.83
5. Step 5: Solve for x
   x = 71,830,492.83/13,426.78
6. Step 6: Final answer
   x = 5,349.79