Finding the Fourth Proportional to 51,025.10, 76,536.24 and 13,585.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,025.10 : 76,536.24 = 13,585.50 : x
2. Step 2: Convert to fraction form
   51,025.10/76,536.24 = 13,585.50/x
3. Step 3: Cross multiply
   51,025.10x = 76,536.24 × 13,585.50
4. Step 4: Simplify right side
   51,025.10x = 1,039,783,088.52
5. Step 5: Solve for x
   x = 1,039,783,088.52/51,025.10
6. Step 6: Final answer
   x = 20,377.87