Finding the Fourth Proportional to 13,131.53, 19,694.28 and 3,771.47

Step by Step Solution

1. Step 1: Write the proportion equation
   13,131.53 : 19,694.28 = 3,771.47 : x
2. Step 2: Convert to fraction form
   13,131.53/19,694.28 = 3,771.47/x
3. Step 3: Cross multiply
   13,131.53x = 19,694.28 × 3,771.47
4. Step 4: Simplify right side
   13,131.53x = 74,276,375.72
5. Step 5: Solve for x
   x = 74,276,375.72/13,131.53
6. Step 6: Final answer
   x = 5,656.34