Finding the Fourth Proportional to 10,156.55, 15,238.53 and 5,228.51

Step by Step Solution

1. Step 1: Write the proportion equation
   10,156.55 : 15,238.53 = 5,228.51 : x
2. Step 2: Convert to fraction form
   10,156.55/15,238.53 = 5,228.51/x
3. Step 3: Cross multiply
   10,156.55x = 15,238.53 × 5,228.51
4. Step 4: Simplify right side
   10,156.55x = 79,674,730.30
5. Step 5: Solve for x
   x = 79,674,730.30/10,156.55
6. Step 6: Final answer
   x = 7,844.67