Finding the Fourth Proportional to 22,402.02, 30,911.28 and 12,968.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,402.02 : 30,911.28 = 12,968.76 : x
2. Step 2: Convert to fraction form
   22,402.02/30,911.28 = 12,968.76/x
3. Step 3: Cross multiply
   22,402.02x = 30,911.28 × 12,968.76
4. Step 4: Simplify right side
   22,402.02x = 400,880,971.61
5. Step 5: Solve for x
   x = 400,880,971.61/22,402.02
6. Step 6: Final answer
   x = 17,894.86