Finding the Fourth Proportional to 22,530.39, 31,089.23 and 12,457.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,530.39 : 31,089.23 = 12,457.47 : x
2. Step 2: Convert to fraction form
   22,530.39/31,089.23 = 12,457.47/x
3. Step 3: Cross multiply
   22,530.39x = 31,089.23 × 12,457.47
4. Step 4: Simplify right side
   22,530.39x = 387,293,087.76
5. Step 5: Solve for x
   x = 387,293,087.76/22,530.39
6. Step 6: Final answer
   x = 17,189.81