Finding the Fourth Proportional to 10,339.42, 15,510.56 and 3,317.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,339.42 : 15,510.56 = 3,317.78 : x
2. Step 2: Convert to fraction form
   10,339.42/15,510.56 = 3,317.78/x
3. Step 3: Cross multiply
   10,339.42x = 15,510.56 × 3,317.78
4. Step 4: Simplify right side
   10,339.42x = 51,460,664.53
5. Step 5: Solve for x
   x = 51,460,664.53/10,339.42
6. Step 6: Final answer
   x = 4,977.13