Finding the Fourth Proportional to 21,271,725.72, 29,354,582.82 and 13,011,181.23

Step by Step Solution

1. Step 1: Write the proportion equation
   21,271,725.72 : 29,354,582.82 = 13,011,181.23 : x
2. Step 2: Convert to fraction form
   21,271,725.72/29,354,582.82 = 13,011,181.23/x
3. Step 3: Cross multiply
   21,271,725.72x = 29,354,582.82 × 13,011,181.23
4. Step 4: Simplify right side
   21,271,725.72x = 381,937,797,002,064.50
5. Step 5: Solve for x
   x = 381,937,797,002,064.50/21,271,725.72
6. Step 6: Final answer
   x = 17,955,186.24