Finding the Fourth Proportional to 39,784.16, 59,684.76 and 13,488.32

Step by Step Solution

1. Step 1: Write the proportion equation
   39,784.16 : 59,684.76 = 13,488.32 : x
2. Step 2: Convert to fraction form
   39,784.16/59,684.76 = 13,488.32/x
3. Step 3: Cross multiply
   39,784.16x = 59,684.76 × 13,488.32
4. Step 4: Simplify right side
   39,784.16x = 805,047,142.00
5. Step 5: Solve for x
   x = 805,047,142.00/39,784.16
6. Step 6: Final answer
   x = 20,235.37