Finding the Fourth Proportional to 10,218.69, 15,307.53 and 7,451.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,218.69 : 15,307.53 = 7,451.22 : x
2. Step 2: Convert to fraction form
   10,218.69/15,307.53 = 7,451.22/x
3. Step 3: Cross multiply
   10,218.69x = 15,307.53 × 7,451.22
4. Step 4: Simplify right side
   10,218.69x = 114,059,773.69
5. Step 5: Solve for x
   x = 114,059,773.69/10,218.69
6. Step 6: Final answer
   x = 11,161.88