Finding the Fourth Proportional to 22,930.08, 31,635.84 and 12,856.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,930.08 : 31,635.84 = 12,856.80 : x
2. Step 2: Convert to fraction form
   22,930.08/31,635.84 = 12,856.80/x
3. Step 3: Cross multiply
   22,930.08x = 31,635.84 × 12,856.80
4. Step 4: Simplify right side
   22,930.08x = 406,735,667.71
5. Step 5: Solve for x
   x = 406,735,667.71/22,930.08
6. Step 6: Final answer
   x = 17,738.08