Finding the Fourth Proportional to 15,156.42, 22,719.78 and 7,256.70

Step by Step Solution

1. Step 1: Write the proportion equation
   15,156.42 : 22,719.78 = 7,256.70 : x
2. Step 2: Convert to fraction form
   15,156.42/22,719.78 = 7,256.70/x
3. Step 3: Cross multiply
   15,156.42x = 22,719.78 × 7,256.70
4. Step 4: Simplify right side
   15,156.42x = 164,870,627.53
5. Step 5: Solve for x
   x = 164,870,627.53/15,156.42
6. Step 6: Final answer
   x = 10,877.94