Finding the Fourth Proportional to 22,071.27, 30,457.59 and 12,638.01

Step by Step Solution

1. Step 1: Write the proportion equation
   22,071.27 : 30,457.59 = 12,638.01 : x
2. Step 2: Convert to fraction form
   22,071.27/30,457.59 = 12,638.01/x
3. Step 3: Cross multiply
   22,071.27x = 30,457.59 × 12,638.01
4. Step 4: Simplify right side
   22,071.27x = 384,923,327.00
5. Step 5: Solve for x
   x = 384,923,327.00/22,071.27
6. Step 6: Final answer
   x = 17,440.02