Finding the Fourth Proportional to 6,428.60, 8,870.58 and 3,595.83

Step by Step Solution

1. Step 1: Write the proportion equation
   6,428.60 : 8,870.58 = 3,595.83 : x
2. Step 2: Convert to fraction form
   6,428.60/8,870.58 = 3,595.83/x
3. Step 3: Cross multiply
   6,428.60x = 8,870.58 × 3,595.83
4. Step 4: Simplify right side
   6,428.60x = 31,897,064.42
5. Step 5: Solve for x
   x = 31,897,064.42/6,428.60
6. Step 6: Final answer
   x = 4,961.74