Finding the Fourth Proportional to 9,791.51, 14,688.61 and 3,947.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,791.51 : 14,688.61 = 3,947.63 : x
2. Step 2: Convert to fraction form
   9,791.51/14,688.61 = 3,947.63/x
3. Step 3: Cross multiply
   9,791.51x = 14,688.61 × 3,947.63
4. Step 4: Simplify right side
   9,791.51x = 57,985,114.18
5. Step 5: Solve for x
   x = 57,985,114.18/9,791.51
6. Step 6: Final answer
   x = 5,921.98