Finding the Fourth Proportional to 14,212.34, 19,613.15 and 7,839.18

Step by Step Solution

1. Step 1: Write the proportion equation
   14,212.34 : 19,613.15 = 7,839.18 : x
2. Step 2: Convert to fraction form
   14,212.34/19,613.15 = 7,839.18/x
3. Step 3: Cross multiply
   14,212.34x = 19,613.15 × 7,839.18
4. Step 4: Simplify right side
   14,212.34x = 153,751,013.22
5. Step 5: Solve for x
   x = 153,751,013.22/14,212.34
6. Step 6: Final answer
   x = 10,818.14