Finding the Fourth Proportional to 9,428.32, 14,142.51 and 3,188.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,428.32 : 14,142.51 = 3,188.39 : x
2. Step 2: Convert to fraction form
   9,428.32/14,142.51 = 3,188.39/x
3. Step 3: Cross multiply
   9,428.32x = 14,142.51 × 3,188.39
4. Step 4: Simplify right side
   9,428.32x = 45,091,766.75
5. Step 5: Solve for x
   x = 45,091,766.75/9,428.32
6. Step 6: Final answer
   x = 4,782.59