Finding the Fourth Proportional to 12,851.10, 19,279.48 and 5,461.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,851.10 : 19,279.48 = 5,461.87 : x
2. Step 2: Convert to fraction form
   12,851.10/19,279.48 = 5,461.87/x
3. Step 3: Cross multiply
   12,851.10x = 19,279.48 × 5,461.87
4. Step 4: Simplify right side
   12,851.10x = 105,302,013.43
5. Step 5: Solve for x
   x = 105,302,013.43/12,851.10
6. Step 6: Final answer
   x = 8,194.01