Finding the Fourth Proportional to 12,925.05, 17,838.53 and 7,892.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,925.05 : 17,838.53 = 7,892.20 : x
2. Step 2: Convert to fraction form
   12,925.05/17,838.53 = 7,892.20/x
3. Step 3: Cross multiply
   12,925.05x = 17,838.53 × 7,892.20
4. Step 4: Simplify right side
   12,925.05x = 140,785,246.47
5. Step 5: Solve for x
   x = 140,785,246.47/12,925.05
6. Step 6: Final answer
   x = 10,892.43