Finding the Fourth Proportional to 27,111.57, 40,669.47 and 7,390.91

Step by Step Solution

1. Step 1: Write the proportion equation
   27,111.57 : 40,669.47 = 7,390.91 : x
2. Step 2: Convert to fraction form
   27,111.57/40,669.47 = 7,390.91/x
3. Step 3: Cross multiply
   27,111.57x = 40,669.47 × 7,390.91
4. Step 4: Simplify right side
   27,111.57x = 300,584,189.17
5. Step 5: Solve for x
   x = 300,584,189.17/27,111.57
6. Step 6: Final answer
   x = 11,086.93