Finding the Fourth Proportional to 12,310.50, 16,987.40 and 7,274.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,310.50 : 16,987.40 = 7,274.94 : x
2. Step 2: Convert to fraction form
   12,310.50/16,987.40 = 7,274.94/x
3. Step 3: Cross multiply
   12,310.50x = 16,987.40 × 7,274.94
4. Step 4: Simplify right side
   12,310.50x = 123,582,315.76
5. Step 5: Solve for x
   x = 123,582,315.76/12,310.50
6. Step 6: Final answer
   x = 10,038.77