Finding the Fourth Proportional to 5,897.86, 8,142.40 and 3,911.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,897.86 : 8,142.40 = 3,911.10 : x
2. Step 2: Convert to fraction form
   5,897.86/8,142.40 = 3,911.10/x
3. Step 3: Cross multiply
   5,897.86x = 8,142.40 × 3,911.10
4. Step 4: Simplify right side
   5,897.86x = 31,845,714.99
5. Step 5: Solve for x
   x = 31,845,714.99/5,897.86
6. Step 6: Final answer
   x = 5,399.54