Finding the Fourth Proportional to 9,953.59, 14,933.12 and 7,880.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,953.59 : 14,933.12 = 7,880.50 : x
2. Step 2: Convert to fraction form
   9,953.59/14,933.12 = 7,880.50/x
3. Step 3: Cross multiply
   9,953.59x = 14,933.12 × 7,880.50
4. Step 4: Simplify right side
   9,953.59x = 117,680,412.76
5. Step 5: Solve for x
   x = 117,680,412.76/9,953.59
6. Step 6: Final answer
   x = 11,822.91