Finding the Fourth Proportional to 22,071.10, 30,457.98 and 12,512.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,071.10 : 30,457.98 = 12,512.78 : x
2. Step 2: Convert to fraction form
   22,071.10/30,457.98 = 12,512.78/x
3. Step 3: Cross multiply
   22,071.10x = 30,457.98 × 12,512.78
4. Step 4: Simplify right side
   22,071.10x = 381,114,002.98
5. Step 5: Solve for x
   x = 381,114,002.98/22,071.10
6. Step 6: Final answer
   x = 17,267.56