Finding the Fourth Proportional to 14,148.42, 19,526.30 and 7,860.79

Step by Step Solution

1. Step 1: Write the proportion equation
   14,148.42 : 19,526.30 = 7,860.79 : x
2. Step 2: Convert to fraction form
   14,148.42/19,526.30 = 7,860.79/x
3. Step 3: Cross multiply
   14,148.42x = 19,526.30 × 7,860.79
4. Step 4: Simplify right side
   14,148.42x = 153,492,143.78
5. Step 5: Solve for x
   x = 153,492,143.78/14,148.42
6. Step 6: Final answer
   x = 10,848.71