Finding the Fourth Proportional to 26,870.96, 37,079.12 and 15,538.72

Step by Step Solution

1. Step 1: Write the proportion equation
   26,870.96 : 37,079.12 = 15,538.72 : x
2. Step 2: Convert to fraction form
   26,870.96/37,079.12 = 15,538.72/x
3. Step 3: Cross multiply
   26,870.96x = 37,079.12 × 15,538.72
4. Step 4: Simplify right side
   26,870.96x = 576,162,063.53
5. Step 5: Solve for x
   x = 576,162,063.53/26,870.96
6. Step 6: Final answer
   x = 21,441.81