Finding the Fourth Proportional to 7,870.88, 10,861.81 and 4,334.08

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.88 : 10,861.81 = 4,334.08 : x
2. Step 2: Convert to fraction form
   7,870.88/10,861.81 = 4,334.08/x
3. Step 3: Cross multiply
   7,870.88x = 10,861.81 × 4,334.08
4. Step 4: Simplify right side
   7,870.88x = 47,075,915.50
5. Step 5: Solve for x
   x = 47,075,915.50/7,870.88
6. Step 6: Final answer
   x = 5,981.03