Finding the Fourth Proportional to 13,884.81, 19,160.71 and 7,917.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,884.81 : 19,160.71 = 7,917.33 : x
2. Step 2: Convert to fraction form
   13,884.81/19,160.71 = 7,917.33/x
3. Step 3: Cross multiply
   13,884.81x = 19,160.71 × 7,917.33
4. Step 4: Simplify right side
   13,884.81x = 151,701,664.10
5. Step 5: Solve for x
   x = 151,701,664.10/13,884.81
6. Step 6: Final answer
   x = 10,925.73