Finding the Fourth Proportional to 11,955.69, 16,499.39 and 9,962.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,955.69 : 16,499.39 = 9,962.91 : x
2. Step 2: Convert to fraction form
   11,955.69/16,499.39 = 9,962.91/x
3. Step 3: Cross multiply
   11,955.69x = 16,499.39 × 9,962.91
4. Step 4: Simplify right side
   11,955.69x = 164,381,887.81
5. Step 5: Solve for x
   x = 164,381,887.81/11,955.69
6. Step 6: Final answer
   x = 13,749.26