Finding the Fourth Proportional to 12,947.51, 19,425.33 and 4,627.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,947.51 : 19,425.33 = 4,627.35 : x
2. Step 2: Convert to fraction form
   12,947.51/19,425.33 = 4,627.35/x
3. Step 3: Cross multiply
   12,947.51x = 19,425.33 × 4,627.35
4. Step 4: Simplify right side
   12,947.51x = 89,887,800.78
5. Step 5: Solve for x
   x = 89,887,800.78/12,947.51
6. Step 6: Final answer
   x = 6,942.48