Finding the Fourth Proportional to 11,958.18, 16,485.01 and 7,918.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,958.18 : 16,485.01 = 7,918.25 : x
2. Step 2: Convert to fraction form
   11,958.18/16,485.01 = 7,918.25/x
3. Step 3: Cross multiply
   11,958.18x = 16,485.01 × 7,918.25
4. Step 4: Simplify right side
   11,958.18x = 130,532,430.43
5. Step 5: Solve for x
   x = 130,532,430.43/11,958.18
6. Step 6: Final answer
   x = 10,915.74