Finding the Fourth Proportional to 22,276, 30,740.88 and 12,340

Step by Step Solution

1. Step 1: Write the proportion equation
   22,276 : 30,740.88 = 12,340 : x
2. Step 2: Convert to fraction form
   22,276/30,740.88 = 12,340/x
3. Step 3: Cross multiply
   22,276x = 30,740.88 × 12,340
4. Step 4: Simplify right side
   22,276x = 379,342,459.20
5. Step 5: Solve for x
   x = 379,342,459.20/22,276
6. Step 6: Final answer
   x = 17,029.20