Finding the Fourth Proportional to 11,872.24, 16,381.84 and 7,090.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,872.24 : 16,381.84 = 7,090.72 : x
2. Step 2: Convert to fraction form
   11,872.24/16,381.84 = 7,090.72/x
3. Step 3: Cross multiply
   11,872.24x = 16,381.84 × 7,090.72
4. Step 4: Simplify right side
   11,872.24x = 116,159,040.52
5. Step 5: Solve for x
   x = 116,159,040.52/11,872.24
6. Step 6: Final answer
   x = 9,784.09