Finding the Fourth Proportional to 10,988.37, 15,153.15 and 10,077.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,988.37 : 15,153.15 = 10,077.72 : x
2. Step 2: Convert to fraction form
   10,988.37/15,153.15 = 10,077.72/x
3. Step 3: Cross multiply
   10,988.37x = 15,153.15 × 10,077.72
4. Step 4: Simplify right side
   10,988.37x = 152,709,202.82
5. Step 5: Solve for x
   x = 152,709,202.82/10,988.37
6. Step 6: Final answer
   x = 13,897.35