Finding the Fourth Proportional to 2,590.56, 3,886.66 and 2,435.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.56 : 3,886.66 = 2,435.86 : x
2. Step 2: Convert to fraction form
   2,590.56/3,886.66 = 2,435.86/x
3. Step 3: Cross multiply
   2,590.56x = 3,886.66 × 2,435.86
4. Step 4: Simplify right side
   2,590.56x = 9,467,359.63
5. Step 5: Solve for x
   x = 9,467,359.63/2,590.56
6. Step 6: Final answer
   x = 3,654.56