Finding the Fourth Proportional to 16,915.32, 23,342.59 and 9,361.51

Step by Step Solution

1. Step 1: Write the proportion equation
   16,915.32 : 23,342.59 = 9,361.51 : x
2. Step 2: Convert to fraction form
   16,915.32/23,342.59 = 9,361.51/x
3. Step 3: Cross multiply
   16,915.32x = 23,342.59 × 9,361.51
4. Step 4: Simplify right side
   16,915.32x = 218,521,889.71
5. Step 5: Solve for x
   x = 218,521,889.71/16,915.32
6. Step 6: Final answer
   x = 12,918.58