Finding the Fourth Proportional to 11,931.39, 17,897.42 and 3,166.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,931.39 : 17,897.42 = 3,166.31 : x
2. Step 2: Convert to fraction form
   11,931.39/17,897.42 = 3,166.31/x
3. Step 3: Cross multiply
   11,931.39x = 17,897.42 × 3,166.31
4. Step 4: Simplify right side
   11,931.39x = 56,668,674.60
5. Step 5: Solve for x
   x = 56,668,674.60/11,931.39
6. Step 6: Final answer
   x = 4,749.55