Finding the Fourth Proportional to 10,080.22, 15,087.90 and 5,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,080.22 : 15,087.90 = 5,388.50 : x
2. Step 2: Convert to fraction form
   10,080.22/15,087.90 = 5,388.50/x
3. Step 3: Cross multiply
   10,080.22x = 15,087.90 × 5,388.50
4. Step 4: Simplify right side
   10,080.22x = 81,301,149.15
5. Step 5: Solve for x
   x = 81,301,149.15/10,080.22
6. Step 6: Final answer
   x = 8,065.41