Finding the Fourth Proportional to 11,109.28, 16,670.88 and 5,918.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,109.28 : 16,670.88 = 5,918.56 : x
2. Step 2: Convert to fraction form
   11,109.28/16,670.88 = 5,918.56/x
3. Step 3: Cross multiply
   11,109.28x = 16,670.88 × 5,918.56
4. Step 4: Simplify right side
   11,109.28x = 98,667,603.53
5. Step 5: Solve for x
   x = 98,667,603.53/11,109.28
6. Step 6: Final answer
   x = 8,881.55