Finding the Fourth Proportional to 35,323.47, 52,971.48 and 13,131.86

Step by Step Solution

1. Step 1: Write the proportion equation
   35,323.47 : 52,971.48 = 13,131.86 : x
2. Step 2: Convert to fraction form
   35,323.47/52,971.48 = 13,131.86/x
3. Step 3: Cross multiply
   35,323.47x = 52,971.48 × 13,131.86
4. Step 4: Simplify right side
   35,323.47x = 695,613,794.50
5. Step 5: Solve for x
   x = 695,613,794.50/35,323.47
6. Step 6: Final answer
   x = 19,692.68