Finding the Fourth Proportional to 10,993.89, 16,472.34 and 7,090.11

Step by Step Solution

1. Step 1: Write the proportion equation
   10,993.89 : 16,472.34 = 7,090.11 : x
2. Step 2: Convert to fraction form
   10,993.89/16,472.34 = 7,090.11/x
3. Step 3: Cross multiply
   10,993.89x = 16,472.34 × 7,090.11
4. Step 4: Simplify right side
   10,993.89x = 116,790,702.56
5. Step 5: Solve for x
   x = 116,790,702.56/10,993.89
6. Step 6: Final answer
   x = 10,623.24