Finding the Fourth Proportional to 11,811.30, 17,719.20 and 4,415.46

Step by Step Solution

1. Step 1: Write the proportion equation
   11,811.30 : 17,719.20 = 4,415.46 : x
2. Step 2: Convert to fraction form
   11,811.30/17,719.20 = 4,415.46/x
3. Step 3: Cross multiply
   11,811.30x = 17,719.20 × 4,415.46
4. Step 4: Simplify right side
   11,811.30x = 78,238,418.83
5. Step 5: Solve for x
   x = 78,238,418.83/11,811.30
6. Step 6: Final answer
   x = 6,624.03