Finding the Fourth Proportional to 13,985.16, 19,300.02 and 7,698.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,985.16 : 19,300.02 = 7,698.12 : x
2. Step 2: Convert to fraction form
   13,985.16/19,300.02 = 7,698.12/x
3. Step 3: Cross multiply
   13,985.16x = 19,300.02 × 7,698.12
4. Step 4: Simplify right side
   13,985.16x = 148,573,869.96
5. Step 5: Solve for x
   x = 148,573,869.96/13,985.16
6. Step 6: Final answer
   x = 10,623.68