Finding the Fourth Proportional to 12,351.35, 18,526.82 and 2,991.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,351.35 : 18,526.82 = 2,991.31 : x
2. Step 2: Convert to fraction form
   12,351.35/18,526.82 = 2,991.31/x
3. Step 3: Cross multiply
   12,351.35x = 18,526.82 × 2,991.31
4. Step 4: Simplify right side
   12,351.35x = 55,419,423.10
5. Step 5: Solve for x
   x = 55,419,423.10/12,351.35
6. Step 6: Final answer
   x = 4,486.91