Finding the Fourth Proportional to 12,356.52, 18,542.38 and 4,858.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,356.52 : 18,542.38 = 4,858.76 : x
2. Step 2: Convert to fraction form
   12,356.52/18,542.38 = 4,858.76/x
3. Step 3: Cross multiply
   12,356.52x = 18,542.38 × 4,858.76
4. Step 4: Simplify right side
   12,356.52x = 90,092,881.54
5. Step 5: Solve for x
   x = 90,092,881.54/12,356.52
6. Step 6: Final answer
   x = 7,291.12