Finding the Fourth Proportional to 22,728.18, 34,097.64 and 7,145.81

Step by Step Solution

1. Step 1: Write the proportion equation
   22,728.18 : 34,097.64 = 7,145.81 : x
2. Step 2: Convert to fraction form
   22,728.18/34,097.64 = 7,145.81/x
3. Step 3: Cross multiply
   22,728.18x = 34,097.64 × 7,145.81
4. Step 4: Simplify right side
   22,728.18x = 243,655,256.89
5. Step 5: Solve for x
   x = 243,655,256.89/22,728.18
6. Step 6: Final answer
   x = 10,720.40