Finding the Fourth Proportional to 14,243.88, 19,656.18 and 7,870.44

Step by Step Solution

1. Step 1: Write the proportion equation
   14,243.88 : 19,656.18 = 7,870.44 : x
2. Step 2: Convert to fraction form
   14,243.88/19,656.18 = 7,870.44/x
3. Step 3: Cross multiply
   14,243.88x = 19,656.18 × 7,870.44
4. Step 4: Simplify right side
   14,243.88x = 154,702,785.32
5. Step 5: Solve for x
   x = 154,702,785.32/14,243.88
6. Step 6: Final answer
   x = 10,861.00