Finding the Fourth Proportional to 11,642.88, 17,469.72 and 9,476.40

Step by Step Solution

1. Step 1: Write the proportion equation
   11,642.88 : 17,469.72 = 9,476.40 : x
2. Step 2: Convert to fraction form
   11,642.88/17,469.72 = 9,476.40/x
3. Step 3: Cross multiply
   11,642.88x = 17,469.72 × 9,476.40
4. Step 4: Simplify right side
   11,642.88x = 165,550,054.61
5. Step 5: Solve for x
   x = 165,550,054.61/11,642.88
6. Step 6: Final answer
   x = 14,219.00