Finding the Fourth Proportional to 14,129.92, 19,498.72 and 7,842.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,129.92 : 19,498.72 = 7,842.72 : x
2. Step 2: Convert to fraction form
   14,129.92/19,498.72 = 7,842.72/x
3. Step 3: Cross multiply
   14,129.92x = 19,498.72 × 7,842.72
4. Step 4: Simplify right side
   14,129.92x = 152,923,001.32
5. Step 5: Solve for x
   x = 152,923,001.32/14,129.92
6. Step 6: Final answer
   x = 10,822.64