Finding the Fourth Proportional to 14,212.19, 19,612.55 and 7,839.37

Step by Step Solution

1. Step 1: Write the proportion equation
   14,212.19 : 19,612.55 = 7,839.37 : x
2. Step 2: Convert to fraction form
   14,212.19/19,612.55 = 7,839.37/x
3. Step 3: Cross multiply
   14,212.19x = 19,612.55 × 7,839.37
4. Step 4: Simplify right side
   14,212.19x = 153,749,898.83
5. Step 5: Solve for x
   x = 153,749,898.83/14,212.19
6. Step 6: Final answer
   x = 10,818.17