Finding the Fourth Proportional to 11,662.76, 16,100.16 and 7,190.21

Step by Step Solution

1. Step 1: Write the proportion equation
   11,662.76 : 16,100.16 = 7,190.21 : x
2. Step 2: Convert to fraction form
   11,662.76/16,100.16 = 7,190.21/x
3. Step 3: Cross multiply
   11,662.76x = 16,100.16 × 7,190.21
4. Step 4: Simplify right side
   11,662.76x = 115,763,531.43
5. Step 5: Solve for x
   x = 115,763,531.43/11,662.76
6. Step 6: Final answer
   x = 9,925.91