Finding the Fourth Proportional to 14,243.50, 19,655.95 and 7,870.09

Step by Step Solution

1. Step 1: Write the proportion equation
   14,243.50 : 19,655.95 = 7,870.09 : x
2. Step 2: Convert to fraction form
   14,243.50/19,655.95 = 7,870.09/x
3. Step 3: Cross multiply
   14,243.50x = 19,655.95 × 7,870.09
4. Step 4: Simplify right side
   14,243.50x = 154,694,111.48
5. Step 5: Solve for x
   x = 154,694,111.48/14,243.50
6. Step 6: Final answer
   x = 10,860.68