Finding the Fourth Proportional to 12,685.61, 19,030.47 and 4,363.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,685.61 : 19,030.47 = 4,363.60 : x
2. Step 2: Convert to fraction form
   12,685.61/19,030.47 = 4,363.60/x
3. Step 3: Cross multiply
   12,685.61x = 19,030.47 × 4,363.60
4. Step 4: Simplify right side
   12,685.61x = 83,041,358.89
5. Step 5: Solve for x
   x = 83,041,358.89/12,685.61
6. Step 6: Final answer
   x = 6,546.11