Finding the Fourth Proportional to 10,607.76, 15,887.03 and 10,238.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,607.76 : 15,887.03 = 10,238.72 : x
2. Step 2: Convert to fraction form
   10,607.76/15,887.03 = 10,238.72/x
3. Step 3: Cross multiply
   10,607.76x = 15,887.03 × 10,238.72
4. Step 4: Simplify right side
   10,607.76x = 162,662,721.17
5. Step 5: Solve for x
   x = 162,662,721.17/10,607.76
6. Step 6: Final answer
   x = 15,334.31