Finding the Fourth Proportional to 10,314.21, 15,468.42 and 3,987.63

Step by Step Solution

1. Step 1: Write the proportion equation
   10,314.21 : 15,468.42 = 3,987.63 : x
2. Step 2: Convert to fraction form
   10,314.21/15,468.42 = 3,987.63/x
3. Step 3: Cross multiply
   10,314.21x = 15,468.42 × 3,987.63
4. Step 4: Simplify right side
   10,314.21x = 61,682,335.64
5. Step 5: Solve for x
   x = 61,682,335.64/10,314.21
6. Step 6: Final answer
   x = 5,980.33