Finding the Fourth Proportional to 10,988.52, 16,477.89 and 7,897.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,988.52 : 16,477.89 = 7,897.56 : x
2. Step 2: Convert to fraction form
   10,988.52/16,477.89 = 7,897.56/x
3. Step 3: Cross multiply
   10,988.52x = 16,477.89 × 7,897.56
4. Step 4: Simplify right side
   10,988.52x = 130,135,124.95
5. Step 5: Solve for x
   x = 130,135,124.95/10,988.52
6. Step 6: Final answer
   x = 11,842.83