Finding the Fourth Proportional to 10,807.61, 16,203.53 and 7,288.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,807.61 : 16,203.53 = 7,288.87 : x
2. Step 2: Convert to fraction form
   10,807.61/16,203.53 = 7,288.87/x
3. Step 3: Cross multiply
   10,807.61x = 16,203.53 × 7,288.87
4. Step 4: Simplify right side
   10,807.61x = 118,105,423.71
5. Step 5: Solve for x
   x = 118,105,423.71/10,807.61
6. Step 6: Final answer
   x = 10,927.99