Finding the Fourth Proportional to 36,878.64, 55,300.68 and 13,488.72

Step by Step Solution

1. Step 1: Write the proportion equation
   36,878.64 : 55,300.68 = 13,488.72 : x
2. Step 2: Convert to fraction form
   36,878.64/55,300.68 = 13,488.72/x
3. Step 3: Cross multiply
   36,878.64x = 55,300.68 × 13,488.72
4. Step 4: Simplify right side
   36,878.64x = 745,935,388.33
5. Step 5: Solve for x
   x = 745,935,388.33/36,878.64
6. Step 6: Final answer
   x = 20,226.76