Finding the Fourth Proportional to 8,443.51, 12,663.32 and 2,519.87

Step by Step Solution

1. Step 1: Write the proportion equation
   8,443.51 : 12,663.32 = 2,519.87 : x
2. Step 2: Convert to fraction form
   8,443.51/12,663.32 = 2,519.87/x
3. Step 3: Cross multiply
   8,443.51x = 12,663.32 × 2,519.87
4. Step 4: Simplify right side
   8,443.51x = 31,909,844.25
5. Step 5: Solve for x
   x = 31,909,844.25/8,443.51
6. Step 6: Final answer
   x = 3,779.22