Finding the Fourth Proportional to 11,870.01, 17,809.20 and 7,422.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,870.01 : 17,809.20 = 7,422.53 : x
2. Step 2: Convert to fraction form
   11,870.01/17,809.20 = 7,422.53/x
3. Step 3: Cross multiply
   11,870.01x = 17,809.20 × 7,422.53
4. Step 4: Simplify right side
   11,870.01x = 132,189,232.23
5. Step 5: Solve for x
   x = 132,189,232.23/11,870.01
6. Step 6: Final answer
   x = 11,136.40