Finding the Fourth Proportional to 7,019.61, 10,521.86 and 3,729.39

Step by Step Solution

1. Step 1: Write the proportion equation
   7,019.61 : 10,521.86 = 3,729.39 : x
2. Step 2: Convert to fraction form
   7,019.61/10,521.86 = 3,729.39/x
3. Step 3: Cross multiply
   7,019.61x = 10,521.86 × 3,729.39
4. Step 4: Simplify right side
   7,019.61x = 39,240,100.82
5. Step 5: Solve for x
   x = 39,240,100.82/7,019.61
6. Step 6: Final answer
   x = 5,590.07