Finding the Fourth Proportional to 47,518.71, 71,281.89 and 12,458.25

Step by Step Solution

1. Step 1: Write the proportion equation
   47,518.71 : 71,281.89 = 12,458.25 : x
2. Step 2: Convert to fraction form
   47,518.71/71,281.89 = 12,458.25/x
3. Step 3: Cross multiply
   47,518.71x = 71,281.89 × 12,458.25
4. Step 4: Simplify right side
   47,518.71x = 888,047,606.09
5. Step 5: Solve for x
   x = 888,047,606.09/47,518.71
6. Step 6: Final answer
   x = 18,688.38