Finding the Fourth Proportional to 7,870.66, 10,861.42 and 4,333.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.66 : 10,861.42 = 4,333.80 : x
2. Step 2: Convert to fraction form
   7,870.66/10,861.42 = 4,333.80/x
3. Step 3: Cross multiply
   7,870.66x = 10,861.42 × 4,333.80
4. Step 4: Simplify right side
   7,870.66x = 47,071,222.00
5. Step 5: Solve for x
   x = 47,071,222.00/7,870.66
6. Step 6: Final answer
   x = 5,980.59