Finding the Fourth Proportional to 12,873,981.72, 19,315,681.92 and 12,113,430.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,873,981.72 : 19,315,681.92 = 12,113,430.60 : x
2. Step 2: Convert to fraction form
   12,873,981.72/19,315,681.92 = 12,113,430.60/x
3. Step 3: Cross multiply
   12,873,981.72x = 19,315,681.92 × 12,113,430.60
4. Step 4: Simplify right side
   12,873,981.72x = 233,979,172,429,594.78
5. Step 5: Solve for x
   x = 233,979,172,429,594.78/12,873,981.72
6. Step 6: Final answer
   x = 18,174,577.03