Finding the Fourth Proportional to 11,915.93, 17,874.05 and 3,150.77

Step by Step Solution

1. Step 1: Write the proportion equation
   11,915.93 : 17,874.05 = 3,150.77 : x
2. Step 2: Convert to fraction form
   11,915.93/17,874.05 = 3,150.77/x
3. Step 3: Cross multiply
   11,915.93x = 17,874.05 × 3,150.77
4. Step 4: Simplify right side
   11,915.93x = 56,316,915.39
5. Step 5: Solve for x
   x = 56,316,915.39/11,915.93
6. Step 6: Final answer
   x = 4,726.19