Finding the Fourth Proportional to 21,710,632.58, 32,566,061.19 and 12,728,886.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,710,632.58 : 32,566,061.19 = 12,728,886.02 : x
2. Step 2: Convert to fraction form
   21,710,632.58/32,566,061.19 = 12,728,886.02/x
3. Step 3: Cross multiply
   21,710,632.58x = 32,566,061.19 × 12,728,886.02
4. Step 4: Simplify right side
   21,710,632.58x = 414,529,681,007,855.56
5. Step 5: Solve for x
   x = 414,529,681,007,855.56/21,710,632.58
6. Step 6: Final answer
   x = 19,093,394.88