Finding the Fourth Proportional to 13,151.77, 19,730.64 and 3,791.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,151.77 : 19,730.64 = 3,791.86 : x
2. Step 2: Convert to fraction form
   13,151.77/19,730.64 = 3,791.86/x
3. Step 3: Cross multiply
   13,151.77x = 19,730.64 × 3,791.86
4. Step 4: Simplify right side
   13,151.77x = 74,815,824.59
5. Step 5: Solve for x
   x = 74,815,824.59/13,151.77
6. Step 6: Final answer
   x = 5,688.65