Finding the Fourth Proportional to 12,715, 19,068.78 and 4,922.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,715 : 19,068.78 = 4,922.04 : x
2. Step 2: Convert to fraction form
   12,715/19,068.78 = 4,922.04/x
3. Step 3: Cross multiply
   12,715x = 19,068.78 × 4,922.04
4. Step 4: Simplify right side
   12,715x = 93,857,297.91
5. Step 5: Solve for x
   x = 93,857,297.91/12,715
6. Step 6: Final answer
   x = 7,381.62