Finding the Fourth Proportional to 22,404.02, 30,914.04 and 12,970.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,404.02 : 30,914.04 = 12,970.76 : x
2. Step 2: Convert to fraction form
   22,404.02/30,914.04 = 12,970.76/x
3. Step 3: Cross multiply
   22,404.02x = 30,914.04 × 12,970.76
4. Step 4: Simplify right side
   22,404.02x = 400,978,593.47
5. Step 5: Solve for x
   x = 400,978,593.47/22,404.02
6. Step 6: Final answer
   x = 17,897.62