Finding the Fourth Proportional to 13,308.18, 19,962.56 and 4,986.64

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308.18 : 19,962.56 = 4,986.64 : x
2. Step 2: Convert to fraction form
   13,308.18/19,962.56 = 4,986.64/x
3. Step 3: Cross multiply
   13,308.18x = 19,962.56 × 4,986.64
4. Step 4: Simplify right side
   13,308.18x = 99,546,100.20
5. Step 5: Solve for x
   x = 99,546,100.20/13,308.18
6. Step 6: Final answer
   x = 7,480.07