Finding the Fourth Proportional to 12,978.08, 19,470 and 3,744.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,978.08 : 19,470 = 3,744.08 : x
2. Step 2: Convert to fraction form
   12,978.08/19,470 = 3,744.08/x
3. Step 3: Cross multiply
   12,978.08x = 19,470 × 3,744.08
4. Step 4: Simplify right side
   12,978.08x = 72,897,237.60
5. Step 5: Solve for x
   x = 72,897,237.60/12,978.08
6. Step 6: Final answer
   x = 5,616.95