Finding the Fourth Proportional to 21,271,933.98, 29,354,870.22 and 13,011,389.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,271,933.98 : 29,354,870.22 = 13,011,389.52 : x
2. Step 2: Convert to fraction form
   21,271,933.98/29,354,870.22 = 13,011,389.52/x
3. Step 3: Cross multiply
   21,271,933.98x = 29,354,870.22 × 13,011,389.52
4. Step 4: Simplify right side
   21,271,933.98x = 381,947,650,741,468.06
5. Step 5: Solve for x
   x = 381,947,650,741,468.06/21,271,933.98
6. Step 6: Final answer
   x = 17,955,473.68