Finding the Fourth Proportional to 13,155.89, 19,731.40 and 5,758.97

Step by Step Solution

1. Step 1: Write the proportion equation
   13,155.89 : 19,731.40 = 5,758.97 : x
2. Step 2: Convert to fraction form
   13,155.89/19,731.40 = 5,758.97/x
3. Step 3: Cross multiply
   13,155.89x = 19,731.40 × 5,758.97
4. Step 4: Simplify right side
   13,155.89x = 113,632,427.60
5. Step 5: Solve for x
   x = 113,632,427.60/13,155.89
6. Step 6: Final answer
   x = 8,637.38