Finding the Fourth Proportional to 12,952.80, 19,425.56 and 3,590.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,952.80 : 19,425.56 = 3,590.55 : x
2. Step 2: Convert to fraction form
   12,952.80/19,425.56 = 3,590.55/x
3. Step 3: Cross multiply
   12,952.80x = 19,425.56 × 3,590.55
4. Step 4: Simplify right side
   12,952.80x = 69,748,426.51
5. Step 5: Solve for x
   x = 69,748,426.51/12,952.80
6. Step 6: Final answer
   x = 5,384.81