Finding the Fourth Proportional to 10,606.08, 15,890.04 and 5,920.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,606.08 : 15,890.04 = 5,920.50 : x
2. Step 2: Convert to fraction form
   10,606.08/15,890.04 = 5,920.50/x
3. Step 3: Cross multiply
   10,606.08x = 15,890.04 × 5,920.50
4. Step 4: Simplify right side
   10,606.08x = 94,076,981.82
5. Step 5: Solve for x
   x = 94,076,981.82/10,606.08
6. Step 6: Final answer
   x = 8,870.10