Finding the Fourth Proportional to 23,655.06, 32,643.56 and 12,900.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,655.06 : 32,643.56 = 12,900.10 : x
2. Step 2: Convert to fraction form
   23,655.06/32,643.56 = 12,900.10/x
3. Step 3: Cross multiply
   23,655.06x = 32,643.56 × 12,900.10
4. Step 4: Simplify right side
   23,655.06x = 421,105,188.36
5. Step 5: Solve for x
   x = 421,105,188.36/23,655.06
6. Step 6: Final answer
   x = 17,801.91