Finding the Fourth Proportional to 14,243.37, 19,656.84 and 7,870.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,243.37 : 19,656.84 = 7,870.15 : x
2. Step 2: Convert to fraction form
   14,243.37/19,656.84 = 7,870.15/x
3. Step 3: Cross multiply
   14,243.37x = 19,656.84 × 7,870.15
4. Step 4: Simplify right side
   14,243.37x = 154,702,279.33
5. Step 5: Solve for x
   x = 154,702,279.33/14,243.37
6. Step 6: Final answer
   x = 10,861.35