Finding the Fourth Proportional to 10,774.56, 14,851.95 and 9,870.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,774.56 : 14,851.95 = 9,870.60 : x
2. Step 2: Convert to fraction form
   10,774.56/14,851.95 = 9,870.60/x
3. Step 3: Cross multiply
   10,774.56x = 14,851.95 × 9,870.60
4. Step 4: Simplify right side
   10,774.56x = 146,597,657.67
5. Step 5: Solve for x
   x = 146,597,657.67/10,774.56
6. Step 6: Final answer
   x = 13,605.91