Finding the Fourth Proportional to 13,290.17, 19,921.57 and 5,898.11

Step by Step Solution

1. Step 1: Write the proportion equation
   13,290.17 : 19,921.57 = 5,898.11 : x
2. Step 2: Convert to fraction form
   13,290.17/19,921.57 = 5,898.11/x
3. Step 3: Cross multiply
   13,290.17x = 19,921.57 × 5,898.11
4. Step 4: Simplify right side
   13,290.17x = 117,499,496.88
5. Step 5: Solve for x
   x = 117,499,496.88/13,290.17
6. Step 6: Final answer
   x = 8,841.09