Finding the Fourth Proportional to 13,061.08, 19,591.50 and 3,200.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.08 : 19,591.50 = 3,200.40 : x
2. Step 2: Convert to fraction form
   13,061.08/19,591.50 = 3,200.40/x
3. Step 3: Cross multiply
   13,061.08x = 19,591.50 × 3,200.40
4. Step 4: Simplify right side
   13,061.08x = 62,700,636.60
5. Step 5: Solve for x
   x = 62,700,636.60/13,061.08
6. Step 6: Final answer
   x = 4,800.57