Finding the Fourth Proportional to 12,688.66, 19,030.56 and 3,452.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,688.66 : 19,030.56 = 3,452.50 : x
2. Step 2: Convert to fraction form
   12,688.66/19,030.56 = 3,452.50/x
3. Step 3: Cross multiply
   12,688.66x = 19,030.56 × 3,452.50
4. Step 4: Simplify right side
   12,688.66x = 65,703,008.40
5. Step 5: Solve for x
   x = 65,703,008.40/12,688.66
6. Step 6: Final answer
   x = 5,178.09