Finding the Fourth Proportional to 12,356.15, 17,050.37 and 7,319.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,356.15 : 17,050.37 = 7,319.57 : x
2. Step 2: Convert to fraction form
   12,356.15/17,050.37 = 7,319.57/x
3. Step 3: Cross multiply
   12,356.15x = 17,050.37 × 7,319.57
4. Step 4: Simplify right side
   12,356.15x = 124,801,254.89
5. Step 5: Solve for x
   x = 124,801,254.89/12,356.15
6. Step 6: Final answer
   x = 10,100.34