Finding the Fourth Proportional to 13,985.59, 19,300.14 and 7,697.97

Step by Step Solution

1. Step 1: Write the proportion equation
   13,985.59 : 19,300.14 = 7,697.97 : x
2. Step 2: Convert to fraction form
   13,985.59/19,300.14 = 7,697.97/x
3. Step 3: Cross multiply
   13,985.59x = 19,300.14 × 7,697.97
4. Step 4: Simplify right side
   13,985.59x = 148,571,898.72
5. Step 5: Solve for x
   x = 148,571,898.72/13,985.59
6. Step 6: Final answer
   x = 10,623.21