Finding the Fourth Proportional to 14,147.38, 19,521.30 and 7,859.76

Step by Step Solution

1. Step 1: Write the proportion equation
   14,147.38 : 19,521.30 = 7,859.76 : x
2. Step 2: Convert to fraction form
   14,147.38/19,521.30 = 7,859.76/x
3. Step 3: Cross multiply
   14,147.38x = 19,521.30 × 7,859.76
4. Step 4: Simplify right side
   14,147.38x = 153,432,732.89
5. Step 5: Solve for x
   x = 153,432,732.89/14,147.38
6. Step 6: Final answer
   x = 10,845.31