Finding the Fourth Proportional to 10,898.52, 15,036.09 and 7,123.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,898.52 : 15,036.09 = 7,123.86 : x
2. Step 2: Convert to fraction form
   10,898.52/15,036.09 = 7,123.86/x
3. Step 3: Cross multiply
   10,898.52x = 15,036.09 × 7,123.86
4. Step 4: Simplify right side
   10,898.52x = 107,114,973.39
5. Step 5: Solve for x
   x = 107,114,973.39/10,898.52
6. Step 6: Final answer
   x = 9,828.40