Finding the Fourth Proportional to 22,770.32, 31,423.17 and 12,699.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,770.32 : 31,423.17 = 12,699.18 : x
2. Step 2: Convert to fraction form
   22,770.32/31,423.17 = 12,699.18/x
3. Step 3: Cross multiply
   22,770.32x = 31,423.17 × 12,699.18
4. Step 4: Simplify right side
   22,770.32x = 399,048,492.00
5. Step 5: Solve for x
   x = 399,048,492.00/22,770.32
6. Step 6: Final answer
   x = 17,524.94