Finding the Fourth Proportional to 9,151.93, 12,620.23 and 7,830.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,151.93 : 12,620.23 = 7,830.01 : x
2. Step 2: Convert to fraction form
   9,151.93/12,620.23 = 7,830.01/x
3. Step 3: Cross multiply
   9,151.93x = 12,620.23 × 7,830.01
4. Step 4: Simplify right side
   9,151.93x = 98,816,527.10
5. Step 5: Solve for x
   x = 98,816,527.10/9,151.93
6. Step 6: Final answer
   x = 10,797.34