Finding the Fourth Proportional to 13,890.65, 19,164.33 and 7,918.00

Step by Step Solution

1. Step 1: Write the proportion equation
   13,890.65 : 19,164.33 = 7,918.00 : x
2. Step 2: Convert to fraction form
   13,890.65/19,164.33 = 7,918.00/x
3. Step 3: Cross multiply
   13,890.65x = 19,164.33 × 7,918.00
4. Step 4: Simplify right side
   13,890.65x = 151,743,117.03
5. Step 5: Solve for x
   x = 151,743,117.03/13,890.65
6. Step 6: Final answer
   x = 10,924.12