Finding the Fourth Proportional to 46,570.35, 69,858.06 and 13,287.86

Step by Step Solution

1. Step 1: Write the proportion equation
   46,570.35 : 69,858.06 = 13,287.86 : x
2. Step 2: Convert to fraction form
   46,570.35/69,858.06 = 13,287.86/x
3. Step 3: Cross multiply
   46,570.35x = 69,858.06 × 13,287.86
4. Step 4: Simplify right side
   46,570.35x = 928,263,705.42
5. Step 5: Solve for x
   x = 928,263,705.42/46,570.35
6. Step 6: Final answer
   x = 19,932.50