Finding the Fourth Proportional to 10,602.06, 15,824.42 and 9,356.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,602.06 : 15,824.42 = 9,356.55 : x
2. Step 2: Convert to fraction form
   10,602.06/15,824.42 = 9,356.55/x
3. Step 3: Cross multiply
   10,602.06x = 15,824.42 × 9,356.55
4. Step 4: Simplify right side
   10,602.06x = 148,061,930.17
5. Step 5: Solve for x
   x = 148,061,930.17/10,602.06
6. Step 6: Final answer
   x = 13,965.39