Finding the Fourth Proportional to 13,152.38, 19,731.60 and 4,387.37

Step by Step Solution

1. Step 1: Write the proportion equation
   13,152.38 : 19,731.60 = 4,387.37 : x
2. Step 2: Convert to fraction form
   13,152.38/19,731.60 = 4,387.37/x
3. Step 3: Cross multiply
   13,152.38x = 19,731.60 × 4,387.37
4. Step 4: Simplify right side
   13,152.38x = 86,569,731.23
5. Step 5: Solve for x
   x = 86,569,731.23/13,152.38
6. Step 6: Final answer
   x = 6,582.06