Finding the Fourth Proportional to 9,076.65, 12,521.27 and 7,880.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,076.65 : 12,521.27 = 7,880.01 : x
2. Step 2: Convert to fraction form
   9,076.65/12,521.27 = 7,880.01/x
3. Step 3: Cross multiply
   9,076.65x = 12,521.27 × 7,880.01
4. Step 4: Simplify right side
   9,076.65x = 98,667,693.41
5. Step 5: Solve for x
   x = 98,667,693.41/9,076.65
6. Step 6: Final answer
   x = 10,870.50