Finding the Fourth Proportional to 28,111.34, 42,165.64 and 9,393.36

Step by Step Solution

1. Step 1: Write the proportion equation
   28,111.34 : 42,165.64 = 9,393.36 : x
2. Step 2: Convert to fraction form
   28,111.34/42,165.64 = 9,393.36/x
3. Step 3: Cross multiply
   28,111.34x = 42,165.64 × 9,393.36
4. Step 4: Simplify right side
   28,111.34x = 396,077,036.15
5. Step 5: Solve for x
   x = 396,077,036.15/28,111.34
6. Step 6: Final answer
   x = 14,089.58