Finding the Fourth Proportional to 12,738.17, 19,108.47 and 4,947.59

Step by Step Solution

1. Step 1: Write the proportion equation
   12,738.17 : 19,108.47 = 4,947.59 : x
2. Step 2: Convert to fraction form
   12,738.17/19,108.47 = 4,947.59/x
3. Step 3: Cross multiply
   12,738.17x = 19,108.47 × 4,947.59
4. Step 4: Simplify right side
   12,738.17x = 94,540,875.09
5. Step 5: Solve for x
   x = 94,540,875.09/12,738.17
6. Step 6: Final answer
   x = 7,421.86