Finding the Fourth Proportional to 13,158.90, 19,735.89 and 5,761.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,158.90 : 19,735.89 = 5,761.98 : x
2. Step 2: Convert to fraction form
   13,158.90/19,735.89 = 5,761.98/x
3. Step 3: Cross multiply
   13,158.90x = 19,735.89 × 5,761.98
4. Step 4: Simplify right side
   13,158.90x = 113,717,803.46
5. Step 5: Solve for x
   x = 113,717,803.46/13,158.90
6. Step 6: Final answer
   x = 8,641.89