Finding the Fourth Proportional to 10,653.84, 14,681.52 and 7,664.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,653.84 : 14,681.52 = 7,664.40 : x
2. Step 2: Convert to fraction form
   10,653.84/14,681.52 = 7,664.40/x
3. Step 3: Cross multiply
   10,653.84x = 14,681.52 × 7,664.40
4. Step 4: Simplify right side
   10,653.84x = 112,525,041.89
5. Step 5: Solve for x
   x = 112,525,041.89/10,653.84
6. Step 6: Final answer
   x = 10,561.92