Finding the Fourth Proportional to 10,005.95, 14,992.49 and 3,428.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,005.95 : 14,992.49 = 3,428.55 : x
2. Step 2: Convert to fraction form
   10,005.95/14,992.49 = 3,428.55/x
3. Step 3: Cross multiply
   10,005.95x = 14,992.49 × 3,428.55
4. Step 4: Simplify right side
   10,005.95x = 51,402,510.16
5. Step 5: Solve for x
   x = 51,402,510.16/10,005.95
6. Step 6: Final answer
   x = 5,137.19