Finding the Fourth Proportional to 22,856.16, 31,541.34 and 12,784.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,856.16 : 31,541.34 = 12,784.56 : x
2. Step 2: Convert to fraction form
   22,856.16/31,541.34 = 12,784.56/x
3. Step 3: Cross multiply
   22,856.16x = 31,541.34 × 12,784.56
4. Step 4: Simplify right side
   22,856.16x = 403,242,153.71
5. Step 5: Solve for x
   x = 403,242,153.71/22,856.16
6. Step 6: Final answer
   x = 17,642.60