Finding the Fourth Proportional to 7,693.81, 10,661.31 and 7,225.63

Step by Step Solution

1. Step 1: Write the proportion equation
   7,693.81 : 10,661.31 = 7,225.63 : x
2. Step 2: Convert to fraction form
   7,693.81/10,661.31 = 7,225.63/x
3. Step 3: Cross multiply
   7,693.81x = 10,661.31 × 7,225.63
4. Step 4: Simplify right side
   7,693.81x = 77,034,654.72
5. Step 5: Solve for x
   x = 77,034,654.72/7,693.81
6. Step 6: Final answer
   x = 10,012.55