Finding the Fourth Proportional to 10,779.78, 14,871.97 and 7,953.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,779.78 : 14,871.97 = 7,953.89 : x
2. Step 2: Convert to fraction form
   10,779.78/14,871.97 = 7,953.89/x
3. Step 3: Cross multiply
   10,779.78x = 14,871.97 × 7,953.89
4. Step 4: Simplify right side
   10,779.78x = 118,290,013.46
5. Step 5: Solve for x
   x = 118,290,013.46/10,779.78
6. Step 6: Final answer
   x = 10,973.32