Finding the Fourth Proportional to 13,915.56, 19,089.10 and 13,162.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,915.56 : 19,089.10 = 13,162.32 : x
2. Step 2: Convert to fraction form
   13,915.56/19,089.10 = 13,162.32/x
3. Step 3: Cross multiply
   13,915.56x = 19,089.10 × 13,162.32
4. Step 4: Simplify right side
   13,915.56x = 251,256,842.71
5. Step 5: Solve for x
   x = 251,256,842.71/13,915.56
6. Step 6: Final answer
   x = 18,055.82