Finding the Fourth Proportional to 3,897.84, 5,810.66 and 3,837.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,897.84 : 5,810.66 = 3,837.90 : x
2. Step 2: Convert to fraction form
   3,897.84/5,810.66 = 3,837.90/x
3. Step 3: Cross multiply
   3,897.84x = 5,810.66 × 3,837.90
4. Step 4: Simplify right side
   3,897.84x = 22,300,732.01
5. Step 5: Solve for x
   x = 22,300,732.01/3,897.84
6. Step 6: Final answer
   x = 5,721.31