Finding the Fourth Proportional to 22,826.80, 31,499.57 and 12,756.00

Step by Step Solution

1. Step 1: Write the proportion equation
   22,826.80 : 31,499.57 = 12,756.00 : x
2. Step 2: Convert to fraction form
   22,826.80/31,499.57 = 12,756.00/x
3. Step 3: Cross multiply
   22,826.80x = 31,499.57 × 12,756.00
4. Step 4: Simplify right side
   22,826.80x = 401,808,416.00
5. Step 5: Solve for x
   x = 401,808,416.00/22,826.80
6. Step 6: Final answer
   x = 17,602.49