Finding the Fourth Proportional to 7,870.58, 10,861.38 and 4,333.79

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.58 : 10,861.38 = 4,333.79 : x
2. Step 2: Convert to fraction form
   7,870.58/10,861.38 = 4,333.79/x
3. Step 3: Cross multiply
   7,870.58x = 10,861.38 × 4,333.79
4. Step 4: Simplify right side
   7,870.58x = 47,070,967.18
5. Step 5: Solve for x
   x = 47,070,967.18/7,870.58
6. Step 6: Final answer
   x = 5,980.62