Finding the Fourth Proportional to 11,858.53, 16,365.63 and 7,078.67

Step by Step Solution

1. Step 1: Write the proportion equation
   11,858.53 : 16,365.63 = 7,078.67 : x
2. Step 2: Convert to fraction form
   11,858.53/16,365.63 = 7,078.67/x
3. Step 3: Cross multiply
   11,858.53x = 16,365.63 × 7,078.67
4. Step 4: Simplify right side
   11,858.53x = 115,846,899.31
5. Step 5: Solve for x
   x = 115,846,899.31/11,858.53
6. Step 6: Final answer
   x = 9,769.08