Finding the Fourth Proportional to 11,419.16, 17,111.05 and 7,916.00

Step by Step Solution

1. Step 1: Write the proportion equation
   11,419.16 : 17,111.05 = 7,916.00 : x
2. Step 2: Convert to fraction form
   11,419.16/17,111.05 = 7,916.00/x
3. Step 3: Cross multiply
   11,419.16x = 17,111.05 × 7,916.00
4. Step 4: Simplify right side
   11,419.16x = 135,450,966.45
5. Step 5: Solve for x
   x = 135,450,966.45/11,419.16
6. Step 6: Final answer
   x = 11,861.73