Finding the Fourth Proportional to 13,725.01, 18,938.47 and 7,756.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,725.01 : 18,938.47 = 7,756.63 : x
2. Step 2: Convert to fraction form
   13,725.01/18,938.47 = 7,756.63/x
3. Step 3: Cross multiply
   13,725.01x = 18,938.47 × 7,756.63
4. Step 4: Simplify right side
   13,725.01x = 146,898,704.56
5. Step 5: Solve for x
   x = 146,898,704.56/13,725.01
6. Step 6: Final answer
   x = 10,702.99