Finding the Fourth Proportional to 10,558.89, 14,559.34 and 7,897.77

Step by Step Solution

1. Step 1: Write the proportion equation
   10,558.89 : 14,559.34 = 7,897.77 : x
2. Step 2: Convert to fraction form
   10,558.89/14,559.34 = 7,897.77/x
3. Step 3: Cross multiply
   10,558.89x = 14,559.34 × 7,897.77
4. Step 4: Simplify right side
   10,558.89x = 114,986,318.67
5. Step 5: Solve for x
   x = 114,986,318.67/10,558.89
6. Step 6: Final answer
   x = 10,890.00