Finding the Fourth Proportional to 13,071.90, 19,604.91 and 3,711.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,071.90 : 19,604.91 = 3,711.72 : x
2. Step 2: Convert to fraction form
   13,071.90/19,604.91 = 3,711.72/x
3. Step 3: Cross multiply
   13,071.90x = 19,604.91 × 3,711.72
4. Step 4: Simplify right side
   13,071.90x = 72,767,936.55
5. Step 5: Solve for x
   x = 72,767,936.55/13,071.90
6. Step 6: Final answer
   x = 5,566.75