Finding the Fourth Proportional to 22,847.45, 31,530.17 and 12,776.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,847.45 : 31,530.17 = 12,776.31 : x
2. Step 2: Convert to fraction form
   22,847.45/31,530.17 = 12,776.31/x
3. Step 3: Cross multiply
   22,847.45x = 31,530.17 × 12,776.31
4. Step 4: Simplify right side
   22,847.45x = 402,839,258.21
5. Step 5: Solve for x
   x = 402,839,258.21/22,847.45
6. Step 6: Final answer
   x = 17,631.70