Finding the Fourth Proportional to 11,897.02, 17,845.73 and 3,131.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,897.02 : 17,845.73 = 3,131.61 : x
2. Step 2: Convert to fraction form
   11,897.02/17,845.73 = 3,131.61/x
3. Step 3: Cross multiply
   11,897.02x = 17,845.73 × 3,131.61
4. Step 4: Simplify right side
   11,897.02x = 55,885,866.53
5. Step 5: Solve for x
   x = 55,885,866.53/11,897.02
6. Step 6: Final answer
   x = 4,697.47