Finding the Fourth Proportional to 10,573.72, 15,876.12 and 10,387.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,573.72 : 15,876.12 = 10,387.08 : x
2. Step 2: Convert to fraction form
   10,573.72/15,876.12 = 10,387.08/x
3. Step 3: Cross multiply
   10,573.72x = 15,876.12 × 10,387.08
4. Step 4: Simplify right side
   10,573.72x = 164,906,528.53
5. Step 5: Solve for x
   x = 164,906,528.53/10,573.72
6. Step 6: Final answer
   x = 15,595.89