Finding the Fourth Proportional to 12,705.50, 19,059.34 and 3,471.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,705.50 : 19,059.34 = 3,471.50 : x
2. Step 2: Convert to fraction form
   12,705.50/19,059.34 = 3,471.50/x
3. Step 3: Cross multiply
   12,705.50x = 19,059.34 × 3,471.50
4. Step 4: Simplify right side
   12,705.50x = 66,164,498.81
5. Step 5: Solve for x
   x = 66,164,498.81/12,705.50
6. Step 6: Final answer
   x = 5,207.55