Finding the Fourth Proportional to 21,074.52, 29,088.63 and 13,112.00

Step by Step Solution

1. Step 1: Write the proportion equation
   21,074.52 : 29,088.63 = 13,112.00 : x
2. Step 2: Convert to fraction form
   21,074.52/29,088.63 = 13,112.00/x
3. Step 3: Cross multiply
   21,074.52x = 29,088.63 × 13,112.00
4. Step 4: Simplify right side
   21,074.52x = 381,409,971.12
5. Step 5: Solve for x
   x = 381,409,971.12/21,074.52
6. Step 6: Final answer
   x = 18,098.16