Finding the Fourth Proportional to 14,188.41, 19,580.61 and 7,900.79

Step by Step Solution

1. Step 1: Write the proportion equation
   14,188.41 : 19,580.61 = 7,900.79 : x
2. Step 2: Convert to fraction form
   14,188.41/19,580.61 = 7,900.79/x
3. Step 3: Cross multiply
   14,188.41x = 19,580.61 × 7,900.79
4. Step 4: Simplify right side
   14,188.41x = 154,702,189.78
5. Step 5: Solve for x
   x = 154,702,189.78/14,188.41
6. Step 6: Final answer
   x = 10,903.42