Finding the Fourth Proportional to 13,904.19, 19,187.69 and 7,616.43

Step by Step Solution

1. Step 1: Write the proportion equation
   13,904.19 : 19,187.69 = 7,616.43 : x
2. Step 2: Convert to fraction form
   13,904.19/19,187.69 = 7,616.43/x
3. Step 3: Cross multiply
   13,904.19x = 19,187.69 × 7,616.43
4. Step 4: Simplify right side
   13,904.19x = 146,141,659.66
5. Step 5: Solve for x
   x = 146,141,659.66/13,904.19
6. Step 6: Final answer
   x = 10,510.62