Finding the Fourth Proportional to 8,981.21, 13,477.98 and 3,137.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,981.21 : 13,477.98 = 3,137.82 : x
2. Step 2: Convert to fraction form
   8,981.21/13,477.98 = 3,137.82/x
3. Step 3: Cross multiply
   8,981.21x = 13,477.98 × 3,137.82
4. Step 4: Simplify right side
   8,981.21x = 42,291,475.20
5. Step 5: Solve for x
   x = 42,291,475.20/8,981.21
6. Step 6: Final answer
   x = 4,708.89